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DTSTART;VALUE=DATE:20260813
DTEND;VALUE=DATE:20260814
DTSTAMP:20260813T095102Z
CREATED:20260723T021921Z
LAST-MODIFIED:20260813T095102Z
UID:142866-1786579200-1786665599@www.a3veen.nl
SUMMARY:Meteorenzwerm Perseïden in augustus 2026
DESCRIPTION:De meteorenzwerm Perseïden bereikt op donderdag 13 augustus 2026\, rond 09:00\, zijn maximum. \nDe meteoren van de Perseïden zijn helder en snel en hebben nalichtende sporen. Wanneer de radiant in het zenit zou staan\, zouden er van deze zwerm naar verwachting gemiddeld zo’n 85 meteoren per uur vallen. Rond 07:30 staat de radiant van de zwerm in het hoogste punt (op 84°) aan de hemel. Het beste moment om Perseïden waar te nemen is op 13 augustus rond 03:45. De radiant staat op dat moment zo’n 60° boven de oostnoordoostelijke horizon. Er zijn dan bij ons ieder uur naar schatting ongeveer 40–55 meteoren van deze zwerm zichtbaar. In totaal zijn er\, door meteoren van andere zwermen en sporadische meteoren\, bij donkere en heldere hemel circa 50–65 “vallende sterren” per uur te zien. Op een goed donkere plek zijn circa drie keer zoveel meteoren zichtbaar als in een grote stad. De Maan stoort niet. Rond 05:45 gaat het schemeren en om 06:20 komt de Zon op. De meteoren van de meeste zwermen verschijnen niet allemaal op de dag van het maximum. Zo is gedurende circa 3\,1 dagen rondom het maximum ruim 50% van het maximum aantal meteoren per uur (23) van de Perseïden te zien\, leuke bijkomstigheid is dat dit voor een tweede sterrenkundige schouwspel naast de Zonsverduistering op 12 augustus zorgt. Tot 12 dagen voor en na het maximum zijn nog meteoren van deze zwerm te herkennen. De zwerm heeft daarmee een relatief korte piek. Er zijn dus nog meer kansen\, voor het geval het in de nacht van het maximum niet helder is. Iedere dag verder weg van het maximum zijn er echter wel ongeveer 40% minder meteoren per uur te zien. De typische snelheden van de meteoren in deze zwerm zijn met circa 59 km/s (ongeveer 213.840 km/uur) relatief hoog. \nLinks:\nMeteorenzwerm Perseïden in augustus 2026 \nPerseids Meteor Shower
URL:https://www.a3veen.nl/event/meteorenzwerm-perseiden-in-augustus-2026/
CATEGORIES:Astronomie
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Amsterdam:20260812T191700
DTEND;TZID=Europe/Amsterdam:20260812T210300
DTSTAMP:20260813T125836Z
CREATED:20260717T011555Z
LAST-MODIFIED:20260813T125836Z
UID:142665-1786562220-1786568580@www.a3veen.nl
SUMMARY:Zonsverduistering op 12 augustus 2026
DESCRIPTION:De totale zonsverduistering van 12 augustus 2026 zal voornamelijk over het noordpoolgebied en de Atlantische Oceaan trekken\, maar ook over Rusland\, Groenland\, het westen van IJsland\, het noorden van Spanje en het noordoosten van Portugal. \nDe Maan schuift dan vanaf de Aarde gezien precies voor de Zon langs. Het punt met maximale totaliteit ligt op zee vlak voor de westkust van IJsland dicht bij het plaatsje Patreksfjörður en duurt 2 minuten en 18 seconden. Bij helder weer zal vanuit Nederland en België de hele gedeeltelijke zonsverduistering zichtbaar zijn. Daar zien we de eclips als een hap die in eerste instantie uit de rechterkant van de Zon wordt genomen en steeds groter wordt. Halverwege de verduistering bevindt die hap zich aan de onderkant\, en tegen het einde van de eclips verdwijnt deze aan de linkerkant van de Zon\, de verduistering duurt 1\,8 uur. Tijdens het maximum van de eclips\, om 20:11 uur\, zal 90% van de diameter van de Zon\, ofwel 88% van haar oppervlakte\, bedekt zijn. De Zon staat op dat moment 8° boven de westnoordwestelijke horizon en het maximum van de eclips is in onze streken redelijk goed zichtbaar. Aangezien de Maan ten zuiden langs de Zon trekt\, wordt de verduistering groter naarmate je je zuidelijker bevindt. Zie de lokale gegevens voor een aantal plaatsen in de Benelux. Een bedekking van 88% is niet voldoende om het donker te maken in onze streken\, maar meer dan genoeg om te worden opgemerkt met het blote oog (zonder vergroting\, maar met bescherming). Daarnaast heeft de reductie aan zonlicht invloed op bijvoorbeeld de energieopwekking door zonnepanelen. Elders is deze eclips te zien als een totale zonsverduistering. De verduistering maakt deel uit van de Saros 126 zonsverduisteringserie. Wanneer het donker is geworden\, is op deze dag nog een tweede schouwspel te bewonderen: de Meteorenzwerm Perseïden. \nLinks:\nZonsverduistering op 12 augustus 2026 \nTotal Solar Eclipse \nHoe kijk je veilig naar een (gedeeltelijke) zonsverduistering? \nSolar eclipse 12-08-2026 – maps \nWatch the total solar eclipse online Aug. 12 with these free livestreams \nWhen is the next solar eclipse? \nNASA’s eclipse website \nXavier Jubier’s eclipse website \neclipsophile.com
URL:https://www.a3veen.nl/event/zonsverduistering-op-12-augustus-2026/
CATEGORIES:Astronomie,Zon
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Amsterdam:20260810T230000
DTEND;TZID=Europe/Amsterdam:20260810T233000
DTSTAMP:20260810T093306Z
CREATED:20260809T232418Z
LAST-MODIFIED:20260810T093306Z
UID:143437-1786402800-1786404600@www.a3veen.nl
SUMMARY:The Sky at Night – Big Black Holes and Little Red Dots (TV BBC Four / BBC iPlayer)
DESCRIPTION:The Sky at Night is a monthly documentary television programme on astronomy produced by the BBC. \nThe show had the same permanent presenter\, Patrick Moore\, from its first broadcast on 24 April 1957 until 7 January 2013. The latter date was a posthumous broadcast\, which followed Moore’s death on 9 December 2012. This made it the longest-running programme with the same presenter in television history. Many early episodes are missing\, either because the tapes were wiped\, thrown out\, or because the episode was broadcast live and never recorded in the first place. Beginning with the 3 February 2013 edition\, the show was co-presented by Lucie Green and Chris Lintott. Since December 2013 Maggie Aderin-Pocock has been a presenter. The programme’s opening and closing theme music is “At the Castle Gate”\, from the incidental music to Pelléas et Mélisande\, written in 1905 by Jean Sibelius\, performed by the Royal Philharmonic Orchestra and conducted by Sir Thomas Beecham. \nThis episode:\nProfessor Brian Cox joins the team to explore one the greatest current mysteries in astronomy – little red dots. Discovered by the James Webb Space Telescope (JWST)\, they have upended everything we thought we knew about black holes and the evolution of the universe itself. \nAstronomical monsters\, with the power to devour stars and even to stop time itself\, black holes have both fascinated and troubled physicists for decades. Their study has led to breakthroughs in our understanding of gravity\, quantum mechanics and even precision manufacturing. \nThe journey begins with black holes 101\, as Chris Lintott and Brian Cox discuss what they are. And as it turns out\, that is a harder question to answer than you might think. Distortions in space-time. Regions of infinite density. Gateways to other universes. The end of time. These are all descriptions of what black holes are\, yet somehow all are insufficient – mathematically accurate yet physically unproven. What we thought we knew was that they are born in the violent deaths of massive stars\, but this may not always be the case\, and that has huge implications for how the cosmos we see today came to be. \nMaggie Aderin travels to the University of Nottingham to meet Dr Emma Chapman\, a cosmologist whose work focuses on the early universe. She explains the significance of JWST’s discovery of the little red dots and why they are forcing the scientific community to re-evaluate not only how black holes form but also how galaxies themselves grow and evolve. \nReturning to Chris and Brian\, the discussion turns to some of the alternative theories\, and some of the explanations are truly staggering\, from black hole suns\, created by partially collapsed stars\, to primordial black holes\, born in the first moments of creation\, and direct collapse black holes. \nAt the University of Edinburgh\, George Dransfield meets Professor Sadegh Khochfar. Using months of processing time on the world’s most advanced supercomputers\, his team have created the most detailed simulations of the universe’s first billion years. Their findings are shedding light on whether direct collapse black holes could exist and whether the density of the early universe could provide the answer to how massive black holes form without first forming stars\, something once thought impossible. \nWhile the nature of the little red dots themselves are still contested\, they are making us re-evaluate what we understand about black holes\, and in doing so\, they provide a window into conditions so extreme that we’re forced to question our assumptions about the very nature of reality and the fundamental physics that underpins the universe. \nBut while understanding the universe is a challenge\, there is still always joy in looking up at the skies above\, and Dr Becky Smethurst is guest presenting this month’s star guide to take us through the treats coming up in the next few weeks. \nJoin us on an exploration of the skies and the latest in our understanding of black holes – the cosmic Rosetta Stones that spark wonder in the scientific community and far beyond. \nLinks:\nThe Sky at Night
URL:https://www.a3veen.nl/event/the-sky-at-night-big-black-holes-and-little-red-dots-tv-bbc-four-bbc-iplayer/
CATEGORIES:Astronomie
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20260810
DTEND;VALUE=DATE:20260811
DTSTAMP:20260810T082525Z
CREATED:20260810T082525Z
LAST-MODIFIED:20260810T082525Z
UID:143424-1786320000-1786406399@www.a3veen.nl
SUMMARY:Meteorenzwerm η-Eridaniden in augustus 2026
DESCRIPTION:De meteorenzwerm η-Eridaniden bereikt op maandag 10 augustus 2026\, rond 14:00\, zijn maximum. \nWanneer de radiant in het zenit zou staan\, zouden er van deze zwerm naar verwachting gemiddeld zo’n 5 meteoren per uur vallen. Rond 07:30 staat de radiant van de zwerm in het hoogste punt (op 25°) aan de hemel. Het beste moment om η-Eridaniden waar te nemen is op 11 augustus rond 04:00. De radiant staat op dat moment zo’n 12° boven de zuidoostelijke horizon; niet erg gunstig. Er is dan bij ons ieder uur niet meer dan één meteoor zichtbaar van deze zwerm. Samen met meteoren van andere zwermen\, en sporadische meteoren\, zijn er bij donkere\, heldere hemel in totaal circa 21–32 meteoren per uur zichtbaar. Op een goed donkere locatie zijn ongeveer 20% meer meteoren te zien dan in een grote stad. De Maan komt om 03:58 op\, is voor ongeveer 4% verlicht en stoort niet. Rond 05:45 gaat het schemeren en om 06:17 komt de Zon op. Over het algemeen zijn de de meteoren van een zwerm niet alleen op de dag van het maximum zichtbaar. Zo is gedurende circa 4 dagen rondom het maximum ruim de helft van het maximum aantal meteoren per uur van de η-Eridaniden te zien. Tot 3 dagen voor en na het maximum zijn nog meteoren van deze zwerm te herkennen. De zwerm heeft daarmee een relatief korte piek. Probeer dus ook enkele nachten voor en na het maximum meteoren waar te nemen. Wel is iedere dag die je eerder voor het maximum\, of later na het maximum waarneemt het aantal meteoren dat zichtbaar is circa 30% kleiner. De snelheden van de meteoren van de η-Eridaniden zijn behoorlijk hoog: zo’n 64 km/s\, dat is circa 230.400 km/uur. \nLinks:\nMeteorenzwerm η-Eridaniden in augustus 2026
URL:https://www.a3veen.nl/event/meteorenzwerm-%ce%b7-eridaniden-in-augustus-2026/
CATEGORIES:Astronomie
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20260805
DTEND;VALUE=DATE:20260806
DTSTAMP:20260814T095750Z
CREATED:20260804T235425Z
LAST-MODIFIED:20260814T095750Z
UID:143607-1785888000-1785974399@www.a3veen.nl
SUMMARY:Life 2.0: A Scalable Distributed Space-Telescope Array for Biosignature Spectroscopy - publication
DESCRIPTION:Answering the question “Are we alone?” requires atmospheric spectroscopy of nearby terrestrial planets\, scientists conclude in the report ‘Life 2.0: A Scalable Distributed Space-Telescope Array for Biosignature Spectroscopy‘. \nFor an Earth–Sun analog\, even the strongest transmission signals are expected to be of order 1 part per million (ppm). Unlike short-period planets\, Earth 2.0 planets transit only about once per year\, so single-transit sensitivity\, rather than stacking repeated observations\, is the fundamental design driver. Life 2.0 is a scalable space-mission concept linking Earth 2.0 candidates discovered by PLATO and the Earth 2.0 (ET) mission with atmospheric characterization and biosignature assessment. The baseline architecture comprises 900 one-meter space telescopes\, each equipped with a high-throughput Waveguide Integrated Miniature Spectrograph and an ultra-low-read-noise CMOS detector. After independent calibration\, spectra acquired simultaneously during a transit are combined\, providing the photon-collecting capability of an approximately 30-m aperture at the selected spectral resolution while retaining a modular architecture. The baseline 0.2–1.05 μm range covers O3\, O2\, H2O\, Rayleigh scattering\, and other diagnostics\, with extension into the infrared as detector technologies mature. Prototype Waveguide Spectral Lens devices have demonstrated 40–66% throughput at resolving powers from R∼200 to R∼20\,000. Lightweight silicon-carbide mirrors and sub-electron-noise CMOS detectors support replicated production. Life 2.0 must address detector systematics\, instrument stability\, and stellar variability; rather than assuming these limitations disappear\, it builds on calibration\, detector-characterization\, and data-analysis techniques advanced during the JWST era. The concept offers a scalable alternative to a monolithic 30-m-class space telescope and a staged pathway toward biosignature spectroscopy of nearby Earth-like planets. \nLinks:\nAnswering the question “Are we alone?” requires atmospheric spectroscopy of nearby terrestrial planets \nNine Hundred Telescopes and One Chance a Year
URL:https://www.a3veen.nl/event/life-2-0-a-scalable-distributed-space-telescope-array-for-biosignature-spectroscopy-publication/
CATEGORIES:Astronomie,Bibliotheek,Exoplaneet,kennis
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20260805
DTEND;VALUE=DATE:20260806
DTSTAMP:20260807T203650Z
CREATED:20260804T232400Z
LAST-MODIFIED:20260807T203650Z
UID:143323-1785888000-1785974399@www.a3veen.nl
SUMMARY:Ubiquitous Kelvin–Helmholtz instabilities driving plasma mixing on the Sun - publication
DESCRIPTION:NSF Inouye Solar Telescope Enables Major Discovery of a Hidden Solar Process. \nScientists using the U.S. National Science Foundation (NSF) Daniel K. Inouye Solar Telescope published the artice ‘Ubiquitous Kelvin–Helmholtz instabilities driving plasma mixing on the Sun‘ about a major breakthrough in solar physics\, discovering Kelvin-Helmholtz Instability on the surface of the Sun — a finding that could help explain explosive solar activity and other solar phenomena. Using the world’s most powerful solar telescope\, the NSF Daniel K. Inouye Solar Telescope near the summit of Maui’s Haleakalā\, combined with computer simulations\, an international team of scientists from the NSO\, NSF NCAR High Altitude Observatory (HAO)\, and the Max Planck Institute for Solar System Research (MPS) found the signature of Kelvin-Helmholtz instability (KHI)\, tiny swirling patterns like small whirlpools\, on the Sun’s surface. Researchers suggest that KHI might be a key reason why the Sun’s outer atmosphere gets so hot\, and why magnetic energy builds up and moves around on the Sun. Magnetic energy fuels solar flares and eruptions—the kind of solar activity that can send bursts of energy toward Earth and affect satellites\, power grids\, and other technology. The discovery opens a new window into the fundamental physics of the Sun and other stars while underscoring the unmatched capabilities of the Inouye Solar Telescope. \nLinks:\nSee the Sun like never before with most detailed images yet
URL:https://www.a3veen.nl/event/nsf-inouye-solar-telescope-enables-major-discovery-of-a-hidden-solar-process-publication/
CATEGORIES:Astronomie,Zon
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20260730
DTEND;VALUE=DATE:20260731
DTSTAMP:20260729T080818Z
CREATED:20260728T220754Z
LAST-MODIFIED:20260729T080818Z
UID:143057-1785369600-1785455999@www.a3veen.nl
SUMMARY:Meteorenzwerm δ-Cassiopeiïden in juli 2026
DESCRIPTION:De meteorenzwerm δ-Cassiopeiïden bereikt op donderdag 30 juli 2026\, rond 04:00\, zijn maximum. \nWanneer de radiant in het zenit zou staan\, zouden er van deze zwerm naar verwachting gemiddeld zo’n 10 meteoren per uur vallen. De radiant van de zwerm staat rond 06:00 in het hoogste punt aan de hemel\, op 79° boven de horizon. Het beste moment om δ-Cassiopeiïden waar te nemen is op 30 juli rond 04:15. De radiant staat op dat moment zo’n 72° boven de noordoostelijke horizon. Er is dan bij ons ieder uur niet meer dan één meteoor zichtbaar van deze zwerm. Samen met meteoren van andere zwermen\, en sporadische meteoren\, zijn er bij donkere\, heldere hemel in totaal circa 1–5 meteoren per uur zichtbaar. De Maan is voor ongeveer 100% verlicht en is een flinke stoorzender; dit jaar zijn hierdoor alleen de helderste meteoren zichtbaar. Rond 05:15 gaat het schemeren en om 05:58 komt de Zon op. Over het algemeen zijn de de meteoren van een zwerm niet alleen op de dag van het maximum zichtbaar. Zo is gedurende circa 5 dagen rondom het maximum meer dan de helft van het maximum aantal meteoren per uur van de δ-Cassiopeiïden te zien. Tot 6 dagen voor en na het maximum zijn nog meteoren van deze zwerm te herkennen. De zwerm heeft daarmee een relatief korte piek. Probeer dus ook enkele nachten voor en na het maximum meteoren waar te nemen. Wel is iedere dag die je eerder voor het maximum\, of later na het maximum waarneemt het aantal meteoren dat zichtbaar is circa 20% kleiner. De typische snelheden van de meteoren in deze zwerm zijn met circa 60 km/s (ongeveer 216.000 km/uur) relatief hoog. \nLinks:\nMeteorenzwerm δ-Cassiopeiïden in juli 2026
URL:https://www.a3veen.nl/event/meteorenzwerm-%ce%b4-cassiopeiiden-in-juli-2026/
CATEGORIES:Astronomie
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20260728
DTEND;VALUE=DATE:20260729
DTSTAMP:20260728T121905Z
CREATED:20260728T020914Z
LAST-MODIFIED:20260728T121905Z
UID:143040-1785196800-1785283199@www.a3veen.nl
SUMMARY:VLT/SPHERE images of the candidate companion of Betelgeuse - publication
DESCRIPTION:Eindelijk hebben astronomen overtuigend bewijs gevonden dat Betelgeuze\, een van de bekendste sterren aan de nachthemel\, niet alleen is. \nMet behulp van de Very Large Telescope (VLT) van de Europese Zuidelijke Sterrenwacht (ESO) heeft een team wetenschappers de scherpste opname ooit gemaakt van een partner-ster die om Betelgeuze draait\, Betelgeuze B. Het onderzoeksartikel ‘VLT/SPHERE images of the candidate companion of Betelgeuse‘ verscheen op 28 juli 2026 in het vakblad Astronomy & Astrophysics. \nLinks:\nAstronomen vinden het tot nu toe sterkste bewijs dat Betelgeuze een metgezel heeft – ESO \nAstronomen vinden het tot nu toe sterkste bewijs dat Betelgeuze een metgezel heeft
URL:https://www.a3veen.nl/event/vlt-sphere-images-of-the-candidate-companion-of-betelgeuse-publication/
CATEGORIES:Astronomie
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20260721
DTEND;VALUE=DATE:20260724
DTSTAMP:20260722T162052Z
CREATED:20260528T220511Z
LAST-MODIFIED:20260722T162052Z
UID:140940-1784592000-1784851199@www.a3veen.nl
SUMMARY:2026 Humans to the Moon & Mars Summit
DESCRIPTION:Links:\n2026 Humans to the Moon and Mars Summit
URL:https://www.a3veen.nl/event/2026-humans-to-the-moon-and-mars-summit/
CATEGORIES:Astronomie
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20260720
DTEND;VALUE=DATE:20260721
DTSTAMP:20260720T130545Z
CREATED:20260720T025255Z
LAST-MODIFIED:20260720T130545Z
UID:142762-1784505600-1784591999@www.a3veen.nl
SUMMARY:Viking@50: 50 Years on Mars
DESCRIPTION:The Viking program consisted of a pair of identical American space probes\, Viking 1 and Viking 2 both launched in 1975\, and landed on Mars in 1976. \nThe mission effort began in 1968 and was managed by the NASA Langley Research Center. Each spacecraft was composed of two main parts: an orbiter spacecraft which photographed the surface of Mars from orbit\, and a lander which studied the planet from the surface. The orbiters also served as communication relays for the landers once they touched down. The Viking program grew from NASA’s earlier\, even more ambitious\, Voyager Mars program\, which was not related to the successful Voyager deep space probes of the late 1970s. Viking 1 was launched on August 20\, 1975\, and the second craft\, Viking 2\, was launched on September 9\, 1975\, both riding atop Titan IIIE rockets with Centaur upper stages. Viking 1 entered Mars orbit on June 19\, 1976\, with Viking 2 following on August 7. After orbiting Mars for more than a month and returning images used for landing site selection\, the orbiters and landers detached; the landers then entered the Martian atmosphere and soft-landed at the sites that had been chosen. The Viking 1 lander touched down on the surface of Mars on July 20\, 1976\, more than two weeks before Viking 2‘s arrival in orbit. Viking 2 then successfully soft-landed on September 3. The orbiters continued imaging and performing other scientific operations from orbit while the landers deployed instruments on the surface. The program terminated in 1982. The project cost was roughly US$1 billion at the time of launch\, equivalent to about $6 billion in 2024 dollars. The mission was considered successful and formed most of the body of knowledge about Mars through the late 1990s and early 2000s. \nLinks:\nViking Project \n50 jaar na landing Viking-missie: nog steeds kans op leven op Mars
URL:https://www.a3veen.nl/event/viking50-50-years-on-mars/
CATEGORIES:Astronomie,Mars
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20260720
DTEND;VALUE=DATE:20260721
DTSTAMP:20260717T184959Z
CREATED:20260716T224809Z
LAST-MODIFIED:20260717T184959Z
UID:142672-1784505600-1784591999@www.a3veen.nl
SUMMARY:Moon Day 2026
DESCRIPTION:The General Assembly declared International Moon Day\, a United Nations-designated international day to be observed annually on 20 July\, in its resolution 76/76 on “International cooperation in the peaceful uses of outer space” in 2021. \nInternational Moon Day marks the anniversary of the first landing by humans on the Moon as part of the Apollo 11 lunar mission. The celebrations will also consider the achievements of all States in the exploration of the Moon and raise public awareness of sustainable Moon exploration and utilization. For thousands of years\, human civilizations have looked up to the sky pondering the origin and mysteries of the Moon – our only natural satellite. Ground-based observations enabled by the invention of the first telescopes opened a new chapter in our understanding of our celestial companion. With the birth of space activities\, the Moon became the ultimate destination of countless missions\, including crewed flights that brought the first human footprints to another place in the universe. As Moon exploration efforts continue taking shape with ambitious plans\, this global celebration will serve not only as a reminder of success in the past\, but as an annual testimony to future endeavours. \nLinks:\nMoon Day \nMoonDay.org \nApollo 11 \nApolloprogramma NASA \nApollo 11 Real-Time Mission Experience \nRare Views of the Moon\, as Seen by Apollo Astronauts \nLetter To The World After The Apollo Astronauts Died On The Moon
URL:https://www.a3veen.nl/event/moon-day-2026/
CATEGORIES:Astronomie,Maan
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Amsterdam:20260717T170000
DTEND;TZID=Europe/Amsterdam:20260717T200000
DTSTAMP:20260717T191100Z
CREATED:20260716T230815Z
LAST-MODIFIED:20260717T191100Z
UID:142674-1784307600-1784318400@www.a3veen.nl
SUMMARY:Most Of The Universe Is Missing And We Don't Know Why (TV New Scientist webcast)
DESCRIPTION:Everything you see\, touch and are built from is a minority of what the universe is actually made of\, and the closer physics looks at the rest\, the less the picture holds together. \nIn 3 hours\, we move outwards through that problem: from the 85 per cent of matter that is invisible\, to the visible matter whose textbook description is admittedly unfinished\, to a dimension of space that scientists are now building by hand in a lab\, and finally to the question of whether we can ever truly know what reality is made of at all. \nLinks:\nWhat If Dark Energy Comes From Space-Time Itself?
URL:https://www.a3veen.nl/event/most-of-the-universe-is-missing-and-we-dont-know-why-tv-new-scientist-webcast/
CATEGORIES:Astronomie,Fysica,kennis
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Amsterdam:20260705T080000
DTEND;TZID=Europe/Amsterdam:20260705T170000
DTSTAMP:20260705T164528Z
CREATED:20260705T064510Z
LAST-MODIFIED:20260705T164528Z
UID:142258-1783238400-1783270800@www.a3veen.nl
SUMMARY:Zonnekijkdag 2026
DESCRIPTION:Tijdens de jaarlijkse Zonnekijkdag op de eerste zondag van juli kun je veilig door een telescoop de zon bewonderen. \nVan migrerende zonnevlekken tot kolkende lussen van gas die groter zijn dan de aarde: amateurastronomen kunnen je met speciale telescopen de zon laten zien zoals je die niet eerder zag. Zitten wolken de zon in de weg? Laat je dan uitleggen wat voor wolken het zijn en wat dat weerkundig betekent. De zon is de dichtstbijzijnde ster vanaf de aarde en die is fascinerend om te bekijken. Dat kun je veilig doen met speciale filters en telescopen. Zonder deze filters is de intensiteit van de zon schadelijk voor je ogen. Amateurastronomen en sterrenwachten hebben gelukkig de juiste apparatuur om jou veilig naar de zon te laten kijken. Zo zijn er in wit-gefilterd licht\, donkere vlekken zichtbaar: die zonnevlekken die een maat zijn voor de activiteit van de zon. En wanneer alle kleuren uit het zonlicht worden weggefilterd met uitzondering van één roodtint\, dan wordt juist een kolkend en wervelend zonsbeeld zichtbaar met lussen van gas die groter kunnen zijn dan de aarde. \nLinks:\nZonnekijkdag
URL:https://www.a3veen.nl/event/zonnekijkdag-2026/
CATEGORIES:Astronomie,Zon
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20260630
DTEND;VALUE=DATE:20260701
DTSTAMP:20260630T094043Z
CREATED:20260627T121602Z
LAST-MODIFIED:20260630T094043Z
UID:142000-1782777600-1782863999@www.a3veen.nl
SUMMARY:#AsteroidDay Dag van de Planetoïde 2026
DESCRIPTION:Asteroid Day (also known as International Asteroid Day) is an annual global event which is held on June 30\, the anniversary of the Tunguska event in 1908 when a meteor air burst levelled about 2\,150 km2 of forest in Siberia\, Russia. \nAsteroid Day was cofounded in 2014 (the year after the 2013 Chelyabinsk meteor air burst) by physicist Stephen Hawking\, B612 Foundation president Danica Remy\, Apollo 9 astronaut Rusty Schweickart\, filmmaker Grigorij Richters\, and Brian May (Queen guitarist and astrophysicist). In 2016\, the United Nations proclaimed Asteroid Day be observed globally on June 30 every year in its resolution. The event aims to raise awareness about asteroids and what can be done to protect the Earth\, its families\, communities\, and future generations from a catastrophic event. \nLinks:\nAsteroid Day \nTorino scale \nAsteroid Day Festival 2026 (TV webcast)
URL:https://www.a3veen.nl/event/asteroidday-dag-van-de-planetoide-2026/
CATEGORIES:Astronomie
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20260629
DTEND;VALUE=DATE:20260704
DTSTAMP:20260623T090012Z
CREATED:20260622T220731Z
LAST-MODIFIED:20260623T090012Z
UID:141823-1782691200-1783123199@www.a3veen.nl
SUMMARY:European Astronomical Society Annual Meeting 2026
DESCRIPTION:The European Astronomical Society (EAS) is a learned society\, founded under the Swiss Civil Code in 1990\, as an association to contribute and promote the advancement of astronomy in Europe\, and to deal with astronomical matters at a European level. \nIt is a society of individual professional astronomers\, and all European astronomers can be members independently of their field of work or country of work or origin. The society offers a forum for discussion on all aspects of astronomical development in Europe\, and is the organisation that represents the interests of astronomers in discussions of European-wide developments. \nLinks:\nEuropean Astronomical Society Annual Meeting
URL:https://www.a3veen.nl/event/european-astronomical-society-annual-meeting-2026/
CATEGORIES:Astronomie
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Amsterdam:20260627T100000
DTEND;TZID=Europe/Amsterdam:20260627T180000
DTSTAMP:20260627T121706Z
CREATED:20260627T103622Z
LAST-MODIFIED:20260627T121706Z
UID:141996-1782554400-1782583200@www.a3veen.nl
SUMMARY:Asteroid Day Festival 2026 (TV webcast)
DESCRIPTION:Celebrate the Asteroid Day with astronauts and leading experts in the space industry as they discuss key topics in space science — from space for Earth\, asteroids\, comets and planetary defence to unconventional careers in the space sector and beyond. \nLinks:\nAsteroid Day Festival 2026
URL:https://www.a3veen.nl/event/asteroid-day-festival-2026-tv-webcast/
CATEGORIES:Astronomie
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Amsterdam:20260618T200000
DTEND;TZID=Europe/Amsterdam:20260618T210000
DTSTAMP:20260804T163954Z
CREATED:20260526T025145Z
LAST-MODIFIED:20260804T163954Z
UID:140876-1781812800-1781816400@www.a3veen.nl
SUMMARY:Babelsberger Sternennächte – Exoplaneten-Atmosphären – Licht lesbar machen | Dr. Daniel Sablowski (TV webcast)
DESCRIPTION:Die Leibniz-Instituts für Astrophysik Potsdam (AIP) Babelsberger Sternennächte finden online statt\, in der Regel gibt es immer am 3. Donnerstag im Monat einen neuen Vortrag einer Wissenschaftlerin oder eines Wissenschaftlers des AIP\, der ab 20 Uhr auf dem YouTube-Kanal von Urknall\, Weltall und das Leben ausgestrahlt wird. \nDie beobachtende Astrophysik lebt von der Analyse des Lichts – der elektromagnetischen Strahlung\, die uns von den Objekten des Weltraums erreicht. Mit Hilfe der Spektralanalyse wird das Licht in seine Wellenlängen zerlegt\, sodass es quantitativ ausgewertet werden kann. Doch wie funktioniert ein solches Messgerät und welche Variationen davon werden in der Astronomie eingesetzt? Ergänzt mit kleinen Experimenten spannt der Vortrag den Bogen von der Funktionsweise eines Beugungsgitters bis zur 3D und Echelle-Spektroskopie. \nLinks:\nBabelsberger Sternennächte \nBabelsberger Sternennächte – playlist
URL:https://www.a3veen.nl/event/babelsberger-sternennachte-exoplaneten-atmospharen-licht-lesbar-machen-dr-daniel-sablowski-tv-webcast/
CATEGORIES:Astronomie
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20260614
DTEND;VALUE=DATE:20260619
DTSTAMP:20260609T084221Z
CREATED:20260608T223918Z
LAST-MODIFIED:20260609T084221Z
UID:141308-1781395200-1781827199@www.a3veen.nl
SUMMARY:248th AAS meeting
DESCRIPTION:The American Astronomical Society (AAS) is an American society of professional astronomers and other interested individuals\, headquartered in Washington\, DC. \nThe primary objective of the AAS is to promote the advancement of astronomy and closely related branches of science\, while the secondary purpose includes enhancing astronomy education and providing a political voice for its members through lobbying and grassroots activities. Its current mission is to enhance and share humanity’s scientific understanding of the universe as a diverse and inclusive astronomical community. One goal of the Society to help achieve its mission is to facilitate and strengthen the interactions among members through professional meetings and other means\, including supporting AAS Divisions and others in the field. AAS Meeting Services provides comprehensive meeting planning and support to our Divisions\, ourselves\, and others in the astronomical sciences. \nLinks:\n248th AAS meeting
URL:https://www.a3veen.nl/event/248th-aas-meeting/
CATEGORIES:Astronomie
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Amsterdam:20260608T230000
DTEND;TZID=Europe/Amsterdam:20260608T233000
DTSTAMP:20260609T115742Z
CREATED:20260608T081444Z
LAST-MODIFIED:20260609T115742Z
UID:141280-1780959600-1780961400@www.a3veen.nl
SUMMARY:The Sky at Night – Space Weather: The Perfect Storm (TV BBC Four / BBC iPlayer)
DESCRIPTION:The Sky at Night is a monthly documentary television programme on astronomy produced by the BBC. \nThe show had the same permanent presenter\, Patrick Moore\, from its first broadcast on 24 April 1957 until 7 January 2013. The latter date was a posthumous broadcast\, which followed Moore’s death on 9 December 2012. This made it the longest-running programme with the same presenter in television history. Many early episodes are missing\, either because the tapes were wiped\, thrown out\, or because the episode was broadcast live and never recorded in the first place. Beginning with the 3 February 2013 edition\, the show was co-presented by Lucie Green and Chris Lintott. Since December 2013 Maggie Aderin-Pocock has been a presenter. The programme’s opening and closing theme music is “At the Castle Gate”\, from the incidental music to Pelléas et Mélisande\, written in 1905 by Jean Sibelius\, performed by the Royal Philharmonic Orchestra and conducted by Sir Thomas Beecham. \nThis episode:\nLife on Earth depends on the sun for its light and its warmth. But the activity of our nearest star also poses a serious threat to all of us. In the most extreme cases\, solar storms can send billions of tons of supercharged plasma hurtling at millions of miles per hour towards us\, crippling our navigation and communication systems and damaging our power grids. In this episode of The Sky at Night\, we uncover a danger that humanity is only just waking up to – space weather. \nWe begin our journey with the first scientifically recorded instance of extreme space weather. Chris Lintott meets the president of the Royal Astronomical Society\, Professor Jim Wild. With privileged access to the society’s archives\, Chris learns about the Carrington Event of 1859\, when a massive solar storm caused aurorae as far south as the Caribbean and sparks to jump from telegraph wires\, setting fires and electrocuting operators. Worryingly\, if this were to hit us today\, it could be a lot worse… \nBut to understand how space weather functions\, we need to grasp how the matter spat out by the sun interacts with the Earth. Maggie Aderin drops into Warwick University to discover how Dr Ravindra Desai’s research is helping us do just that. From the magnetosphere\, the vast protective bubble generated by our planet’s magnetic core\, to the Van Allen Belts – dangerous layers of radiation trapped just above the Earth – Dr Desai is developing next-generation forecasting tools that will help to protect us from future risks. \nAt Imperial College London\, Chris Lintott gets a peek inside a groundbreaking deep space mission that will revolutionise our ability to monitor the sun’s activity and forecast solar storms. Professor Jonathan Eastwood\, the magnetometer instrument lead of Vigil\, takes Chris through the satellite’s capabilities. Sat 150 million kms away from Earth\, Vigil will monitor the sun’s surface as it rotates towards us\, giving us an extra five days’ notice of hazardous activity and a chance to avert a crisis. \nIn Exeter\, our guest presenter\, Sophia Herod\, is allowed inside a very special department at the Met Office’s HQ – one of only a handful of 24/7 space weather forecasting operations in the world. There\, with the help of space weather expert Krista Hammond\, Sophia discovers how the Met Office is keeping a beady eye on the sun\, investing in the technologies of the future\, and working with government and industry to protect vital infrastructure we all rely on. Ultimately\, Sophia reveals that the UK is leading the way on space weather. \nAlthough space weather can be scary stuff\, we don’t need to live through a disaster movie. This episode tells the amazing story of scientific solutions to vast and intractable problems\, and how teams of people dedicate their working lives to keeping us safe from the very worst that the sun can throw at us. \nLinks:\nThe Sky at Night
URL:https://www.a3veen.nl/event/the-sky-at-night-jspace-weather-the-perfect-storm-tv-bbc-four-bbc-iplayer/
CATEGORIES:Astronomie
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20260526
DTEND;VALUE=DATE:20260528
DTSTAMP:20260709T130957Z
CREATED:20260526T130435Z
LAST-MODIFIED:20260709T130957Z
UID:142440-1779753600-1779926399@www.a3veen.nl
SUMMARY:EU Space Days 2026
DESCRIPTION:EU Space Days 2026 took place in Nicosia\, Cyprus\, on 26 and 27 May\, bringing the European space community together for the EU’s annual event dedicated to space policy\, industry\, innovation\, and strategic autonomy. \nOrganised under the auspices of the Cyprus Presidency of the Council of the EU\, the event signalled Cyprus’s growing role in the European space ecosystem. Participants included representatives from EU institutions\, Member States\, EU agencies\, space organisations\, industry\, SMEs\, start-ups\, investors\, researchers\, and defence and security stakeholders\, making the event both a policy forum and a space for business exchange and networking. As a Member State increasingly engaged with the space sector and as holder of the Council Presidency\, Cyprus gave the event an institutional framing which reinforced a recurring message across both days: space is a shared European responsibility\, with an expanding number of Member States becoming active participants. This was also reflected in the months leading up to the event. In March 2026\, Cyprus completed the first activation and operational use of secure satellite communication services delivered through Governmental Satellite Communications (GOVSATCOM)\, following the launch of the service’s initial operations in January 2026. Space is increasingly central to the EU’s security\, resilience\, and economic future. Against that backdrop\, EU Space Days 2026 brought together senior EU decision-makers\, industry leaders\, start-ups\, and researchers in Nicosia\, Cyprus\, for two days of high-level discussions on the state and direction of Europe’s space endeavours. Organised under the auspices of the Cyprus Presidency of the Council of the EU\, the event covered topics ranging from defence and strategic autonomy to workforce development and quantum communications. In this Observer\, we take a look at some of the key highlights and forward-looking messages. \nLinks:\nEU Space Days 2026
URL:https://www.a3veen.nl/event/eu-space-days-2026/
CATEGORIES:Astronomie,EU
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Amsterdam:20260521T200000
DTEND;TZID=Europe/Amsterdam:20260521T210000
DTSTAMP:20260527T125101Z
CREATED:20260521T125040Z
LAST-MODIFIED:20260527T125101Z
UID:140873-1779393600-1779397200@www.a3veen.nl
SUMMARY:Babelsberger Sternennächte – Exoplaneten-Atmosphären – Artemis II - Einmal Mond und zurück | Dr. Mirko Krumpe (TV webcast)
DESCRIPTION:Die Leibniz-Instituts für Astrophysik Potsdam (AIP) Babelsberger Sternennächte finden online statt\, in der Regel gibt es immer am 3. Donnerstag im Monat einen neuen Vortrag einer Wissenschaftlerin oder eines Wissenschaftlers des AIP\, der ab 20 Uhr auf dem YouTube-Kanal von Urknall\, Weltall und das Leben ausgestrahlt wird. \nDr. Mirko Krumpe ist Wissenschaftler in der Forschungsgruppe Röntgenastronomie am AIP und verfügt über umfangreiche Erfahrung mit Satelliten\, unter anderem durch seine Arbeit an eROSITA und mit XMM-Newton. In seinem Vortrag nimmt er uns mit auf die Reise „Einmal Mond und zurück“. Er berichtet nicht nur über die Hintergründe und den Ablauf der Artemis-II-Mission\, sondern zeigt auch\, welche kleineren und größeren Herausforderungen das Team aus einer Astronautin und drei Astronauten auf dem Weg bewältigen musste\, bevor es erfolgreich den Mond umrunden und wohlbehalten auf der Erde ankommen konnte. \nLinks:\nBabelsberger Sternennächte \nBabelsberger Sternennächte – playlist
URL:https://www.a3veen.nl/event/babelsberger-sternennachte-exoplaneten-atmospharen-artemis-ii-einmal-mond-und-zuruck-dr-mirko-krumpe-tv-webcast/
CATEGORIES:Astronomie
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20260518
DTEND;VALUE=DATE:20260519
DTSTAMP:20260517T173156Z
CREATED:20260517T173156Z
LAST-MODIFIED:20260517T173156Z
UID:140629-1779062400-1779148799@www.a3veen.nl
SUMMARY:2026 JH2 - closest approach to Earth
DESCRIPTION:2026 JH2 is a small near-Earth asteroid with a diameter between 15 and 35 metres. \nIt was discovered by the Mount Lemmon Survey in Tucson\, Arizona on 10 May 2026. Classified as an Earth-crossing Apollo asteroid\, 2026 JH2 will pass no closer than 91\,000 ± 4\,500 kilometres from Earth on 18 May 2026\, far enough to pose no threat. During its close approach to Earth\, it will brighten to an apparent magnitude of up to 11.5\, bright enough to be seen by a small telescope under dark skies. \nLinks:\n2026 JH2 \nGrote asteroïde scheert maandag ‘rakelings’ langs de aarde: “Zo dicht als je kan komen zonder te botsen”
URL:https://www.a3veen.nl/event/2026-jh2-closest-approach-to-earth/
CATEGORIES:Astronomie
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Amsterdam:20260511T230000
DTEND;TZID=Europe/Amsterdam:20260511T233000
DTSTAMP:20260511T182020Z
CREATED:20260510T220942Z
LAST-MODIFIED:20260511T182020Z
UID:140404-1778540400-1778542200@www.a3veen.nl
SUMMARY:The Sky at Night – Jodrell Bank: Tuning Into the Universe (TV BBC Four / BBC iPlayer)
DESCRIPTION:The Sky at Night is a monthly documentary television programme on astronomy produced by the BBC. \nThe show had the same permanent presenter\, Patrick Moore\, from its first broadcast on 24 April 1957 until 7 January 2013. The latter date was a posthumous broadcast\, which followed Moore’s death on 9 December 2012. This made it the longest-running programme with the same presenter in television history. Many early episodes are missing\, either because the tapes were wiped\, thrown out\, or because the episode was broadcast live and never recorded in the first place. Beginning with the 3 February 2013 edition\, the show was co-presented by Lucie Green and Chris Lintott. Since December 2013 Maggie Aderin-Pocock has been a presenter. The programme’s opening and closing theme music is “At the Castle Gate”\, from the incidental music to Pelléas et Mélisande\, written in 1905 by Jean Sibelius\, performed by the Royal Philharmonic Orchestra and conducted by Sir Thomas Beecham. \nThis episode:\nIt started 80 years ago with a field\, army surplus\, wartime radar and a visionary idea – and it changed how we see the universe forever. In this episode\, we step inside the remarkable story of Jodrell Bank Observatory and its towering Lovell Telescope\, an instrument that scientists have used to listen to the cosmos for almost 70 years. Taking us on this journey\, Maggie Aderin meets research scientist Dr Emmanuel K Bempong-Manful to discover how the team he is in decide who gets time on the renowned Lovell Telescope\, and what it can reveal. But connect this giant telescope with telescopes across the UK\, and it becomes the headquarters of E-Merlin. That gives astronomers incredible resolution with which to view the universe in ways never seen before – delivering powerful results that deepen our understanding of how the cosmos works. \nBut how did this site become home to such an iconic scientific landmark\, nestled in the Cheshire countryside? Professor Tim O’Brien takes Maggie on a tour of Jodrell Bank’s early history\, from its beginnings as a botanist’s field\, through the adaptation of wartime radar using army surplus\, to the construction of what was\, at the time\, the world’s largest steerable radio telescope – an ambition many believed impossible. Driven by the vision of Bernard Lovell\, the project ran dramatically over budget and needed a miracle to be completed – which arrived with the onset of the Cold War. \nAt the University of Manchester Library\, Chris Lintott joins Professor Danielle George\, GCHQ’s chief scientific adviser for national security\, to examine previously top-secret files revealing Jodrell Bank’s role at the height of Cold War tensions. From tracking potential intercontinental missiles to listening in on the Soviet race to the moon\, Chris uncovers the ingenious technologies and human stories playing out during one of the most perilous periods in modern history. Back at Jodrell Bank\, the telescope’s constant watch on the sky continues. George Dransfield meets PhD student Phoebe Ryder\, who is exploring how the Lovell’s extraordinary sensitivity can be adapted to study threats orbiting Earth – helping scientists anticipate potentially catastrophic collisions that could prevent any space launches – for years to come. Moving between past\, present and future\, this is a story of ambition\, ingenuity and quiet vigilance – a reminder that some of the most important frontiers are explored not just by looking deeper into space\, but by listening carefully to what the universe is telling us. \nLinks:\nThe Sky at Night
URL:https://www.a3veen.nl/event/the-sky-at-night-jodrell-bank-tuning-into-the-universe-tv-bbc-four-bbc-iplayer/
CATEGORIES:Astronomie
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20260507
DTEND;VALUE=DATE:20260508
DTSTAMP:20260507T185753Z
CREATED:20260506T224927Z
LAST-MODIFIED:20260507T185753Z
UID:140278-1778112000-1778198399@www.a3veen.nl
SUMMARY:Meteorenzwerm η-Aquariden in mei 2026
DESCRIPTION:De meteorenzwerm η-Aquariden bereikt op donderdag 7 mei 2026\, rond 22:00\, zijn maximum\, de meteoren van de η-Aquariden zijn snel en hebben nalichtende sporen. \nWanneer de radiant in het zenit zou staan\, zouden er van deze zwerm naar verwachting gemiddeld zo’n 30 meteoren per uur vallen. De radiant van de zwerm staat rond 09:00 in het hoogste punt aan de hemel\, op 37° boven de horizon. Het beste moment om η-Aquariden waar te nemen is op 8 mei rond 04:45. De radiant van de zwerm staat dan ongeveer 14° boven de oostzuidoostelijke horizon\, dus niet zeer gunstig. Er is dan bij ons ieder uur niet meer dan één meteoor zichtbaar van deze zwerm. Samen met meteoren van andere zwermen\, en sporadische meteoren\, zijn er bij donkere\, heldere hemel in totaal circa 3–7 “vallende sterren” per uur te zien. De Maan komt om 02:53 op\, is voor ongeveer 65% verlicht en kan eventueel storen. Rond 05:15 gaat het schemeren en om 05:57 komt de Zon op. De meteoren van de meeste zwermen verschijnen niet allemaal op de dag van het maximum. Zo is gedurende circa 11 dagen rondom het maximum ruim de helft van het maximale aantal meteoren van de η-Aquariden te zien. Tot 25 dagen voor en na het maximum zijn nog meteoren van deze zwerm te herkennen. De zwerm heeft daarmee een vrij lange piek. Er zijn dus nog meer kansen\, voor het geval het in de nacht van het maximum niet helder is. Iedere dag verder weg van het maximum zijn er echter wel ongeveer 10% minder meteoren per uur te zien. De typische snelheden van de meteoren in deze zwerm zijn met circa 66 km/s (ongeveer 236.160 km/uur) relatief hoog. Meteoren waarnemen kan zonder speciale instrumenten. Wanneer het helder is\, volstaat het blote oog. \nLinks:\nMeteorenzwerm η-Aquariden in mei 2026
URL:https://www.a3veen.nl/event/meteorenzwerm-%ce%b7-aquariden-in-mei-2026/
CATEGORIES:Astronomie
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20260418
DTEND;VALUE=DATE:20260419
DTSTAMP:20260418T175520Z
CREATED:20260418T175520Z
LAST-MODIFIED:20260418T175520Z
UID:139576-1776470400-1776556799@www.a3veen.nl
SUMMARY:Meteorenzwerm α-Virginiden in april 2026
DESCRIPTION:De meteorenzwerm α-Virginiden bereikt op zaterdag 18 april 2026\, rond 11:00\, zijn maximum. \nWanneer de radiant in het zenit zou staan\, zouden er van deze zwerm naar verwachting gemiddeld zo’n 5 meteoren per uur vallen. Rond 01:00 staat de radiant van de zwerm in het hoogste punt (op 36°) aan de hemel. Er is dan bij ons ieder uur slechts een enkele meteoor van deze zwerm zichtbaar. In totaal zijn er\, door meteoren van andere zwermen en sporadische meteoren\, bij donkere en heldere hemel circa 5–10 “vallende sterren” per uur te zien. Op een goed donkere plek zijn circa drie keer zoveel meteoren zichtbaar als in een grote stad. De Maan komt om 06:31 op\, is voor ongeveer 0% verlicht en stoort niet. Rond 06:00 gaat het schemeren en om 06:36 komt de Zon op. \nLinks:\nMeteorenzwerm α-Virginiden in april 2026
URL:https://www.a3veen.nl/event/meteorenzwerm-%ce%b1-virginiden-in-april-2026/
CATEGORIES:Astronomie
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Amsterdam:20260416T200000
DTEND;TZID=Europe/Amsterdam:20260416T210000
DTSTAMP:20260417T082510Z
CREATED:20260416T082439Z
LAST-MODIFIED:20260417T082510Z
UID:139532-1776369600-1776373200@www.a3veen.nl
SUMMARY:Babelsberger Sternennächte – Exoplaneten-Atmosphären - Von regnenden Rubinen bis zur Suche nach Leben | Dr. Fabio Lesjak (TV webcast)
DESCRIPTION:Die Leibniz-Instituts für Astrophysik Potsdam (AIP) Babelsberger Sternennächte finden online statt\, in der Regel gibt es immer am 3. Donnerstag im Monat einen neuen Vortrag einer Wissenschaftlerin oder eines Wissenschaftlers des AIP\, der ab 20 Uhr auf dem YouTube-Kanal von Urknall\, Weltall und das Leben ausgestrahlt wird. \nDr. Fabio Lesjak\, Wissenschaftler in der Forschungsgruppe Sternphysik und Exoplaneten am AIP\, spricht zu „Exoplaneten-Atmosphären – Von regnenden Rubinen bis zur Suche nach Leben“. Ähnlich wie die Planeten in unserem Sonnensystem sind viele Exoplaneten von Atmosphären umgeben. Durch die Untersuchung dieser Atmosphären mit Hilfe hochauflösender Spektroskopie können Forschende Rückschlüsse auf die Zusammensetzung der Atmosphäre\, ihre Temperatur und sogar über vorherrschende Winde ziehen. \n\nLinks:\nBabelsberger Sternennächte \nBabelsberger Sternennächte – playlist
URL:https://www.a3veen.nl/event/babelsberger-sternennachte-exoplaneten-atmospharen-von-regnenden-rubinen-bis-zur-suche-nach-leben-dr-fabio-lesjak-tv-webcast/
CATEGORIES:Astronomie,Exoplaneet
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Amsterdam:20260413T080000
DTEND;TZID=Europe/Amsterdam:20260413T170000
DTSTAMP:20260414T140743Z
CREATED:20260413T080121Z
LAST-MODIFIED:20260414T140743Z
UID:139234-1776067200-1776099600@www.a3veen.nl
SUMMARY:The Sky at Night – Destination Moon (TV BBC Four / BBC iPlayer)
DESCRIPTION:The Sky at Night is a monthly documentary television programme on astronomy produced by the BBC. \nThe show had the same permanent presenter\, Patrick Moore\, from its first broadcast on 24 April 1957 until 7 January 2013. The latter date was a posthumous broadcast\, which followed Moore’s death on 9 December 2012. This made it the longest-running programme with the same presenter in television history. Many early episodes are missing\, either because the tapes were wiped\, thrown out\, or because the episode was broadcast live and never recorded in the first place. Beginning with the 3 February 2013 edition\, the show was co-presented by Lucie Green and Chris Lintott. Since December 2013 Maggie Aderin-Pocock has been a presenter. The programme’s opening and closing theme music is “At the Castle Gate”\, from the incidental music to Pelléas et Mélisande\, written in 1905 by Jean Sibelius\, performed by the Royal Philharmonic Orchestra and conducted by Sir Thomas Beecham. \nThis episode:\nMaggie Aderin\, self-proclaimed lunar-tic\, examines Nasa’s Artemis II mission: the first crewed journey towards the moon in more than 50 years. It’s a mission designed to carry astronauts around the moon’s far side and safely home again\, marking the furthest human beings will have travelled into space. While the programme explores the mission’s progress on and off the launch pad as Artemis II prepares for its next attempt at lift-off\, George Dransfield visits Imperial College London to speak with Dr Helen Sharman\, who became the first British astronaut in 1991 when she travelled to the Mir space station. Helen offers insight into what it’s like to wait for launch and why the moon is once again drawing the world’s attention. \nBut the renewed focus on the moon goes beyond sending people there. A series of robotic landers has recently attempted to reach the lunar surface\, with mixed outcomes. To understand this new phase of exploration\, Maggie heads to the Open University to meet Dr Simeon Barber\, who is developing his latest lunar instrument. Not every mission carrying his instruments has succeeded\, but as he explains\, setbacks are as informative as successes and form part of the fast-moving international effort to return to the moon. But it’s not only astronauts and robots that get the chance to study our closest neighbour. We all see it as we go about our everyday lives\, and Pete Lawrence is on hand to highlight what to look out for if you pause for a moment\, glance upward and take in its quiet beauty. \nIt is the slow and steady progress of China’s Chang’e programme that brought back the first samples from the moon’s far side in 2024. Chris Lintott meets Professor Yang Li at University College London to find out what those samples are telling Yang and his team\, and the clues it gives us to a long-standing puzzle: the stark differences between the near and far sides of our lunar neighbour. These developing insights only strengthen the desire to explore further. To understand what Artemis II might contribute\, Maggie speaks with Nasa’s Dr Kelsey Young\, who leads the mission’s lunar science objectives. She explains what the first people to see the moon up close in more than half a century are trained to be looking out for. \nWill Artemis II be sweeping around the moon by the time this programme airs\, or will we be waiting a little longer for lift-off? Whatever happens with the journey back to the moon\, the story is advancing\, whether Artemis II flies or not. There are new scientific clues already coming from lunar samples\, and robotic landers still pushing forward with fresh attempts and data. The moon’s secrets\, history and untapped potential keep drawing us back\, urging us to look up and explore the lunar surface once again. \nLinks:\nThe Sky at Night
URL:https://www.a3veen.nl/event/the-sky-at-night-space-mysteries-destination-moon-tv-bbc-four/
CATEGORIES:Astronomie
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DTSTART;VALUE=DATE:20260412
DTEND;VALUE=DATE:20260413
DTSTAMP:20260412T141605Z
CREATED:20260412T141605Z
LAST-MODIFIED:20260412T141605Z
UID:139214-1775952000-1776038399@www.a3veen.nl
SUMMARY:#HumanSpaceFlightDay / Dag van de Ruimtevaart 2026
DESCRIPTION:The UN General Assembly\, in its resolution A/RES/65/271 of 7 April 2011\, declared 12 April as the International Day of Human Space Flight “to celebrate each year at the international level the beginning of the space era for mankind\, reaffirming the important contribution of space science and technology in achieving sustainable development goals and increasing the well-being of States and peoples\, as well as ensuring the realization of their aspiration to maintain outer space for peaceful purposes.” \n12 April 1961 was the date of the first human space flight\, carried out by Yuri Gagarin\, a Soviet citizen. This historic event opened the way for space exploration for the benefit of all humanity. The General Assembly expressed its deep conviction of the common interest of mankind in promoting and expanding the exploration and use of outer space\, as the province of all mankind\, for peaceful purposes and in continuing efforts to extend to all States the benefits derived there from. \nLinks:\nDay of Human Space Flight 12 April
URL:https://www.a3veen.nl/event/humanspaceflightday-dag-van-de-ruimtevaart-2026/
CATEGORIES:Astronomie
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DTSTART;TZID=Europe/Amsterdam:20260402T002400
DTEND;TZID=Europe/Amsterdam:20260411T235900
DTSTAMP:20260423T083124Z
CREATED:20260124T012604Z
LAST-MODIFIED:20260423T083124Z
UID:135846-1775089440-1775951940@www.a3veen.nl
SUMMARY:Artemis II - mission
DESCRIPTION:Artemis II is a planned lunar spaceflight mission under the Artemis program\, led by NASA. It is intended to be the second flight of the Space Launch System (SLS)\, and is both the first crewed mission of the Orion spacecraft and the first crewed mission to the vicinity of the Moon since Apollo 17 in 1972. \nLaunch is scheduled for no earlier than April\, 2026. The 10-day mission will carry NASA astronauts Reid Wiseman\, Victor Glover\, and Christina Koch\, along with Canadian Space Agency astronaut Jeremy Hansen\, on a free-return trajectory around the Moon and back to Earth. Glover will become the first person of color\, Koch the first woman\, and Hansen the first non-American to travel to the Moon. The flight will take the crew farther from Earth than any previous human mission before reentering Earth’s atmosphere at a record speed of approximately 40\,000 km/h. Artemis II was originally designated Exploration Mission-2 (EM-2) and was initially intended to support the now-canceled Asteroid Redirect Mission. Its objectives were revised following the establishment of the Artemis program. The Artemis II mission plan is to send four astronauts in the first crewed Orion spacecraft into a lunar flyby using the Block 1 variant of the Space Launch System. The mission profile is a multi-trans-lunar injection (MTLI)\, or multiple departure burns\, and includes a free-return trajectory from the Moon. The Orion spacecraft will be sent to a high Earth orbit with a period of roughly 24 hours. During this time the crew will perform various checkouts of the spacecraft’s life support systems as well as an in-space rendezvous and proximity operations demonstration using the spent Interim Cryogenic Propulsion Stage (ICPS) as a target. When Orion reaches perigee once again\, it will fire its main engine to complete the TLI maneuver\, which will send it onto a lunar free-return trajectory\, before returning to Earth. Artemis II will test and demonstrate optical communications to and from Earth using the Orion Artemis II Optical Communications System (O2O). The O2O hardware will be integrated into the Orion spacecraft and includes an optical module (a 100 mm telescope and two gimbals)\, a modem and control electronics. O2O will communicate with ground stations in California and New Mexico. The test device will send data to Earth with a downlink rate of up to 260 megabits per second. \nNASA concluded a wet dress rehearsal for the agency’s Artemis II test flight early Tuesday morning February 3\, 2026\, successfully loading cryogenic propellant into the SLS (Space Launch System) tanks\, sending a team out to the launch pad to closeout Orion\, and safely draining the rocket. The wet dress rehearsal was a prelaunch test to fuel the rocket\, designed to identify any issues and resolve them before attempting a launch. Engineers pushed through several challenges during the two-day test and met many of the planned objectives. To allow teams to review data and conduct a second wet dress rehearsal. NASA will roll the SLS (Space Launch System) rocket and Orion spacecraft for Artemis II off the launch pad at the agency’s Kennedy Space Center in Florida as soon as Tuesday\, Feb. 24. On Feb. 21\, managers decided to remove recently installed platforms before high winds descend on the Space Coast\, which poised teams for rollback while discussions about the issue were ongoing. Returning to the Vehicle Assembly Building at Kennedy is required to determine the cause of the issue and fix it. Once NASA’s Artemis II SLS (Space Launch System) rocket and Orion spacecraft arrived at the Vehicle Assembly Building (VAB) Feb. 25\, technicians immediately began addressing why the flow of helium to the SLS upper stage was interrupted as engineers were reconfiguring the rocket following a successful wet dress rehearsal on Feb. 21. To make the repairs\, teams are installing two sets of internal access platforms inside the launch vehicle stage adapter and must remove thermal blankets that cover the area they are interested in – a point on the rocket’s interim cryogenic propulsion system\, or upper stage. The area provides connections for multiple umbilicals\, including tubing used to fill the upper stage with helium. Helium is used to maintain proper environmental conditions\, and to pressurize the stage for flight. \nOn Friday\, March 20\, NASA’s Artemis II SLS rocket and Orion spacecraft arrived at Launch Pad 39B after an 11-hour journey from the Vehicle Assembly Building at the agency’s Kennedy Space Center in Florida. NASA’s crawler-transporter 2 began its  6 km trek with the integrated SLS and Orion stacked on top of the mobile launcher at 18:20 CEST. The crawler carried the Moon rocket and spacecraft slowly and steadily toward the pad. At Pad 39B\, NASA teams were gearing up for the final stretch of prelaunch preparations ahead of launch as soon as Thursday\, April 2 at 00:24 CEST. The early April launch window includes opportunities through Monday\, April 6. NASA’s SLS rocket lifted off at 00:35 CEST Wednesday April 2 sending four astronauts aboard the Orion spacecraft on a planned test flight around the Moon and back. After the mission management team polled “Go” Thursday\, NASA’s Orion spacecraft fired its main engine for five minutes and 50 seconds beginning April 3 at 01:49 CEST\, to successfully complete the translunar injection (TLI) burn\, sending the crew in Orion out of Earth orbit and on a trajectory toward the Moon. On April 7\, the Artemis II mission wrapped up a seven-hour lunar flyby\, marking humanity’s first return to the Moon since Apollo 17 in 1972 and capturing images of the lunar far side. The momentous day began at 01:02:51 CEST as the astronauts set the record for the farthest distance from Earth traveled by any human. During a planned 40-minute loss of signal as Orion passed behind the Moon\, the spacecraft and its crew made their closest approach at 01:00:46 CEST\, flying at about 6544 kilometer above the surface. Two minutes later\, the crew reached the mission’s maximum distance from Earth at 406.771 km\, setting a new record for human spaceflight. The Orion spacecraft is scheduled to splash down off the coast of San Diego at approximately 02:07 on Saturday\, April 11 (CEST). \nLinks:\nArtemis II\, at NASA \nMission Overview\, at NASA \nArtemis II “Send Your Name to Space”\, at NASA \nFocus : Mens op de maan \nArtemis 2 moon mission shouldn’t launch until late 2026\, new analysis of solar superflares suggests \nHistorische maanvlucht van start: ‘Heftiger nu er mensen aan boord zijn’ \nWat hébben we nu eigenlijk aan een menselijke maanlanding? \nArtemisprogramma / Artemis program : Artemis II
URL:https://www.a3veen.nl/event/artemis-ii-launch/
CATEGORIES:Astronomie,Maan
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DTSTART;VALUE=DATE:20260401
DTEND;VALUE=DATE:20260501
DTSTAMP:20260401T093717Z
CREATED:20260401T093405Z
LAST-MODIFIED:20260401T093717Z
UID:138820-1775001600-1777593599@www.a3veen.nl
SUMMARY:#GAM2026 Global Astronomy Month 2026
DESCRIPTION:Inspired by the 100 hours of astronomy\, this annual offshoot began upon the inception of Astronomers Without Borders and remains one of its flagship programs. \nA mix of various programs ranging from Astro Arts to Observational Programs\, this festival runs the whole month of April and features partners that creates a larger community of astronomy enthusiasts that span the globe. \nLinks:\nGlobal Astronomy Month 2026
URL:https://www.a3veen.nl/event/gam2026-global-astronomy-month-2026/
CATEGORIES:Astronomie
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