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BEGIN:VEVENT
DTSTART;TZID=Europe/Amsterdam:20240418T200000
DTEND;TZID=Europe/Amsterdam:20240418T213000
DTSTAMP:20260601T170250
CREATED:20240418T080619Z
LAST-MODIFIED:20240418T192257Z
UID:106343-1713470400-1713475800@www.a3veen.nl
SUMMARY:Babelsberger Sternennächte : eROSITA - Die Kartierung des heißen Universums (TV webcast)
DESCRIPTION:Die 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 (Playlist). \nDas Röntgenteleskop eROSITA startete 2019 mit dem Satelliten Spektrum-Röntgen-Gamma (SRG) von Baikonur aus ins All und kartierte bis Februar 2022 den gesamten Himmel mehrmals im Röntgenbereich. Das deutsche eROSITA-Konsortium veröffentlichte seinen Anteil aus der ersten 6-monatigen Himmelsdurchmusterung. Mit 900.000 Objekten ist damit der bislang größte Katalog von Röntgenquellen wie Schwarzen Löchern\, Weißen Zwergen und Quasaren weltweit zugänglich. In diesem Vortrag stellt Georg Lamer das eROSITA-Projekt vor und präsentiert einige Highlights aus den ersten 6 Monaten der Himmeldurchmusterung. \nLinks:\nBabelsberger Sternennächte
URL:https://www.a3veen.nl/event/babelsberger-sternennachte-erosita-die-kartierung-des-heisen-universums-tv-webcast/
CATEGORIES:Astronomie
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20240421
DTEND;VALUE=DATE:20240422
DTSTAMP:20260601T170250
CREATED:20240329T024036Z
LAST-MODIFIED:20240329T225212Z
UID:105177-1713657600-1713743999@www.a3veen.nl
SUMMARY:Komeet 12P/Pons-Brooks in 2024
DESCRIPTION:De komeet 12P/Pons-Brooks bereikt het perihelium op 21 april 2024\, deze periodieke komeet heeft een sterk elliptische baan\, met een omlooptijd van circa 71.4 jaar. \nDe komeet bevindt zich tijdens het perihelium op een afstand van 0\,78 AE van de Zon en op 1\,61 AE van de Aarde. De helderheid van het object bedraagt dan magnitude +3\,4. Bedenk hierbij dat het lastig is de helderheid van een komeet exact te voorspellen. Daarnaast is een komeet vaak onzichtbaar rond het moment van grootste helderheid\, doordat deze zich dan te dicht bij de Zon aan de hemel bevindt. De komeet is zichtbaar aan onze ochtendhemel met een helderheid groter dan achtste magnitude tussen 3 januari en 23 maart 2024\, en aan de avondhemel tussen 3 januari en 20 april 2024. Vanaf 21 april is het object in Nederland en België vrijwel onzichtbaar. Wij zien de grootste helderheid rond 20 april: magnitude +3\,4. Er is een telescoop nodig met een diameter van tenminste 10.8 cm om het object op dat moment waar te kunnen nemen. Het meest gunstige moment om de komeet te bekijken vanuit onze streken is rond 27 maart. Het object heeft dan een helderheid van +4\,2m en een magnitudecontrast van -0\,1m\, lastig om het object met het blote oog waar te nemen\, maar een eenvoudige verrekijker (in de hand of op statief) helpt hier al bij. \nMerk op dat een diffuse komeet lastiger waar te nemen is dan een ster met dezelfde helderheid. De dichtste nadering van 12P/Pons-Brooks tot de Aarde gebeurt rond 1 juni. De afstand bedraagt dan 1\,55 AE\, circa 231 miljoen km. De komeet beweegt vóór de periheliumpassage onder andere door de sterrenbeelden Zwaan\, Hagedis\, Andromeda\, Vissen\, Ram en Stier. 12P/Pons-Brooks werd op 12 juli 1812 ontdekt door Jean-Louis Pons. Onafhankelijk daarvan ontdekte Vincent Wisniewski de komeet op 1 augustus en Alexis Bouvard op 2 augustus in hetzelfde jaar. Men vermoedde toen al dat de omloop tussen de 65 en 70 jaar lag. Later bepaalde Johann Franz Encke de definitieve baan met een omlooptijd van 70\,68 jaar. In 1882 zocht men tevergeefs naar de komeet. In 1883 werd hij bij toeval ontdekt door William Robert Brooks en pas later geïdentificeerd als dezelfde komeet. In 1954 werd de komeet weer gezien. De volgende passage is uitgerekend op 2 juni 2024. Carl Sagan stelde de theorie dat 12P/Pons-Brooks de grote komeet is die de Chinezen beschreven in 1486 v. Chr. \nLinks:\nKomeet 12P/Pons-Brooks in 2024 \n12P/Pons-Brooks – Small-Body Database
URL:https://www.a3veen.nl/event/komeet-12p-pons-brooks-in-2024/
CATEGORIES:Astronomie
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Amsterdam:20240422T110000
DTEND;TZID=Europe/Amsterdam:20240422T170000
DTSTAMP:20260601T170250
CREATED:20240422T080439Z
LAST-MODIFIED:20240422T080439Z
UID:106597-1713783600-1713805200@www.a3veen.nl
SUMMARY:Meteorenzwerm Lyriden in april 2024
DESCRIPTION:De meteorenzwerm Lyriden bereikt op maandag 22 april 2024\, rond 11:00\, zijn maximum\, de meteoren van de Lyriden zijn snel en helder en vertonen soms vuurbollen. \nWanneer de radiant in het zenit zou staan\, zouden er van deze zwerm naar verwachting gemiddeld zo’n 13 meteoren per uur vallen. De radiant van de zwerm staat rond 06:00 in het hoogste punt aan de hemel\, op 71° boven de horizon. Het beste moment om Lyriden waar te nemen is op 22 april rond 05:00. De radiant van de zwerm staat dan ongeveer 69° boven de horizon\, in het zuidzuidoosten. Door de matige omstandigheden zijn er in onze streken dan vermoedelijk maar circa 0–3 meteoren per uur van deze zwerm te zien. In totaal zijn er\, door meteoren van andere zwermen en sporadische meteoren\, bij donkere en heldere hemel circa 1–5 meteoren per uur zichtbaar. De Maan is voor ongeveer 95% verlicht en is een flinke stoorzender; dit jaar zijn hierdoor alleen de helderste meteoren zichtbaar. Rond 05:45 gaat het schemeren en om 06:27 komt de Zon op. \nLinks:\nDe meteorenzwerm Lyriden in april 2024
URL:https://www.a3veen.nl/event/meteorenzwerm-lyriden-in-april-2024/
CATEGORIES:Astronomie
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20240423
DTEND;VALUE=DATE:20240424
DTSTAMP:20260601T170250
CREATED:20240428T225908Z
LAST-MODIFIED:20240429T112925Z
UID:106985-1713830400-1713916799@www.a3veen.nl
SUMMARY:Our High-Energy Universe: 15 Years with the Fermi Gamma-ray Space Telescope - publication
DESCRIPTION:To commemorate a milestone anniversary for NASA’s Fermi spacecraft\, the mission team has published an e-book called “Our High-Energy Universe: 15 Years with the Fermi Gamma-ray Space Telescope”\, readers can download the e-book in PDF and EPUB formats. The e-book is aimed at general audiences with an interest in space. \nLaunched on June 11\, 2008\, Fermi detects gamma rays\, the highest-energy form of light\, from Earth’s atmosphere to far-flung galaxies and cosmic phenomena in between\, its research has uncovered details on topics ranging from solar flares to star formation and the mysteries at the center of our Milky Way. Through images\, fun facts\, and launch-day memories\, the e-book tells Fermi’s story from conceptualization to launch and recounts some of the mission’s groundbreaking discoveries. By delving into high-energy astrophysics topics like gamma-ray bursts and blazars\, readers can explore Fermi’s universe and what questions remain open for investigation in its next chapter. Fermi was originally called the Gamma-ray Large Area Space Telescope but was renamed after Italian physicist Enrico Fermi in August 2008. “Enrico Fermi’s science has been important for understanding the sources that the Fermi telescope sees\,” said Elizabeth Hays\, the mission’s project scientist at NASA’s Goddard Space Flight Center in Greenbelt\, Maryland. “The gamma-ray sky is powered by particle acceleration mechanisms he theorized about.” The satellite has two gamma-ray detectors: the Large Area Telescope (LAT) and the Gamma-ray Burst Monitor (GBM). The LAT observes a fifth of the gamma-ray sky at any time\, detecting high-energy light with energies ranging from 20 million to over 300 billion electron volts (The energy of visible light is 2 to 3 electron volts). \n The GBM views about 70% of the sky at a time at lower energies\, searching for brief flashes of gamma-ray light. The result of this carefully crafted duo is the most sensitive gamma-ray observatory in orbit\, equipped to study the universe’s highest-energy phenomena near and far. By peering through Fermi’s gamma-ray eyes\, we can better understand our solar system. Within its first eight years of operation\, Fermi detected gamma-ray emissions from 40 solar flares — bursts of energy from the Sun. Some even originated on the Sun’s far side\, allowing scientists to analyze how charged particles fired by solar flares can arc from one side of the Sun to produce gamma rays on the other. In studying our Milky Way\, Fermi found two lobes of high-energy gamma rays — called the Fermi Bubbles — extending above and below the galaxy’s center. Each bubble stands 25\,000 light-years tall. Astronomers think the bubbles formed following an ancient burst of activity from the Milky Way’s central supermassive black hole. Fermi helps scientists understand black holes in other galaxies\, too. “As a black hole forms\, either from the death of a massive star or the collision of two neutron stars\, it creates a brief flash of light called a gamma-ray burst\,” said Judith Racusin\, Fermi’s deputy project scientist at Goddard. \n“Fermi detects about one burst a day and has helped revolutionize our understanding of these phenomena.” Even after 15 years of accomplishments\, however\, many mysteries remain for Fermi to tackle. One of the telescope’s ongoing objectives is to study the composition of dark matter — the mysterious substance that makes up about 25% of the universe. Because dark matter doesn’t reflect\, absorb\, or emit light\, scientists remain unsure of its composition. One popular theory suggests\, though\, that dark matter particles create gamma rays when they interact. If Fermi can spot this high-energy signature\, it might help scientists learn more about dark matter’s makeup. If there’s one thing Fermi has taught us\, it’s to expect the unexpected. Gamma-ray research has yielded unprecedented breakthroughs in our understanding of the Milky Way’s central black hole\, our flaring Sun\, and merging neutron stars. As much as we anticipate the next gamma-ray revelation\, only time will tell what exactly Fermi has in store. Fermi is an astrophysics and particle physics partnership managed by Goddard. Fermi was developed in collaboration with the U.S. Department of Energy\, with important contributions from academic institutions and partners in France\, Germany\, Italy\, Japan\, Sweden\, and the United States. \n\n\n\nLinks:\nExplore the Universe with the First E-Book from NASA’s Fermi
URL:https://www.a3veen.nl/event/our-high-energy-universe-15-years-with-the-fermi-gamma-ray-space-telescope-publication/
CATEGORIES:Astronomie
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Amsterdam:20240424T000000
DTEND;TZID=Europe/Amsterdam:20240424T010000
DTSTAMP:20260601T170250
CREATED:20240421T134721Z
LAST-MODIFIED:20240912T151006Z
UID:106572-1713916800-1713920400@www.a3veen.nl
SUMMARY:Advanced Composite Solar Sail System
DESCRIPTION:A NASA mission testing a new way of navigating our solar system is ready to hoist its sail into space – not to catch the wind\, but the propulsive power of sunlight\, the Advanced Composite Solar Sail System is targeting launch on Tuesday\, April 23\, 2024 (Wednesday\, April 24 in New Zealand\, the launch window opens at 00:00 April 24 MEST)\, aboard a Rocket Lab Electron rocket from the company’s Launch Complex 1 on the Mahia Peninsula of New Zealand. \nRocket Lab’s Electron rocket will deploy the mission’s CubeSat about 1\,000 kilometers above Earth – more than twice the altitude of the International Space Station. To test the performance of NASA’s Advanced Composite Solar Sail System\, the spacecraft must be in a high enough orbit for the tiny force of sunlight on the sail – roughly equivalent to the weight of a paperclip resting on your palm – to overcome atmospheric drag and gain altitude. After a busy initial flight phase\, which will last about two months and includes subsystems checkout\, the microwave oven-sized CubeSat will deploy its reflective solar sail. The weeks-long test consists of a series of pointing maneuvers to demonstrate orbit raising and lowering\, using only the pressure of sunlight acting on the sail. After reaching its Sun-synchronous orbit the spacecraft will begin unrolling its composite booms\, which span the diagonals of the polymer sail\, measuring about 80 square meters. Spacecraft-mounted cameras will capture the sail’s big moment\, monitoring its shape and symmetry during deployment. With its large sail\, the spacecraft may be visible from Earth if the lighting conditions are just right. Once fully expanded and at the proper orientation\, the sail’s reflective material will be as bright as Sirius\, the brightest star in the night sky. \n\n \nhttps://nasa.tumblr.com/post/748579343742140416/setting-sail-to-travel-through-space-5-things-to\n\n\nLinks:\nNASA to Hoist Its Sail: Solar Sail Mission Gets Ready for Launch \nNASA Next-Generation Solar Sail Boom Technology Ready for Launch
URL:https://www.a3veen.nl/event/advanced-composite-solar-sail-system/
CATEGORIES:Astronomie
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Amsterdam:20240426T202000
DTEND;TZID=Europe/Amsterdam:20240426T214500
DTSTAMP:20260601T170250
CREATED:20240424T155238Z
LAST-MODIFIED:20240424T155238Z
UID:106772-1714162800-1714167900@www.a3veen.nl
SUMMARY:Discourse: Decoding the cosmos
DESCRIPTION:Just a century ago\, observational evidence established the existence of other galaxies besides our own. \nSoon afterwards\, it was discovered that the Universe is expanding\, driving a profound change in our understanding of the cosmos. In 1998\, the prevailing cosmological paradigm was again upended by the discovery that the Universe’s expansion is accelerating. Since then\, the remarkable progress in cosmology\, spanning Peiris’s research career\, has been driven by the close interplay between theory and observations. Observational discoveries have led to a Standard Model of cosmology with ingredients not present in the standard model of particle physics – dark matter\, dark energy\, and a primordial origin for cosmic structure. The physical nature of these ingredients remains a mystery. The race to unravel this cosmic puzzle is now underway\, motivating a new generation of ambitious sky surveys across the electromagnetic spectrum and using new messengers such as gravitational waves. Peiris will describe some highlights from her journey through this rapidly changing cosmological landscape in this discourse. She will also discuss how laboratory experiments are helping us test new fundamental physics paradigms developed to explain cosmological observations. \nLinks:\nDiscourse: Decoding the cosmos
URL:https://www.a3veen.nl/event/discourse-decoding-the-cosmos/
LOCATION:The Royal Institution of Great Britain\, 21 Albemarle Street\, London\, Verenigd Koninkrijk
CATEGORIES:Astronomie,kennis
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20240501
DTEND;VALUE=DATE:20240502
DTSTAMP:20260601T170250
CREATED:20240501T120858Z
LAST-MODIFIED:20241108T140027Z
UID:115764-1714521600-1714607999@www.a3veen.nl
SUMMARY:An independent hybrid imaging of Sgr A* from the data in EHT 2017 observations - publication
DESCRIPTION:1st image of our Milky Way’s black hole may be inaccurate\, scientists say. \nWhat does the supermassive black hole lurking at the center of our galaxy look like? It’s a deceptively simple question. Although our local cosmic abyss\, named Sgr A* (short for Sagittarius A*)\, resides just 26\,000 light-years from Earth\, it has proven to be a very difficult object to image. This is thanks in part to material whipping around it at near light-speeds. However\, after years of trying\, scientists with the Event Horizon Telescope (EHT) project succeeded in 2022.The black hole’s silhouette emerged from the shadows\, appearing like a fuzzy orange doughnut. Yet now\, an independent analysis of the EHT data suggests part of the image’s doughnut-like appearance may be an artifact due to the way it was put together. This discovery owes itself to  a trio of scientists at the National Astronomical Observatory of Japan (NAOJ). \nLinks:\n1st image of our Milky Way’s black hole may be inaccurate\, scientists say \nFirst Image of Milky Way Black Hole May Be Actually Be Entirely Wrong
URL:https://www.a3veen.nl/event/an-independent-hybrid-imaging-of-sgr-a-from-the-data-in-eht-2017-observations-publication/
CATEGORIES:Astronomie,Zwart gat
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20240503
DTEND;VALUE=DATE:20240504
DTSTAMP:20260601T170250
CREATED:20240503T075037Z
LAST-MODIFIED:20240503T075037Z
UID:107263-1714694400-1714780799@www.a3veen.nl
SUMMARY:World Sun Day 2024
DESCRIPTION:On May 3rd\, the whole world annually celebrates the Sun Day. \nSun Day was designated in 1978 by United States President Jimmy Carter\, specifically devoted to advocacy for solar power\, following a joint resolution by Congress\, H.J.Res. 715 becoming Pub. L.Tooltip Public Law (United States) 95–253. It was modeled on the highly successful Earth Day of April 22\, 1970. It was the idea of Denis Hayes\, who also coordinated Earth Day in 1970. The date became an international event in 1994\, initiated by the European Section of the International Solar Energy Society (ISES). \nLinks:\nMay 3rd – International Sun Day
URL:https://www.a3veen.nl/event/world-sun-day-2024/
CATEGORIES:Zon
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20240506
DTEND;VALUE=DATE:20240507
DTSTAMP:20260601T170250
CREATED:20240506T071522Z
LAST-MODIFIED:20240506T111230Z
UID:107446-1714953600-1715039999@www.a3veen.nl
SUMMARY:Radio-astronomen omzeilen storende aardatmosfeer met nieuwe kalibratietechniek / Characterisation of the decameter sky at sub-arcminute resolution - publication / publicatie
DESCRIPTION:Oud (links) versus nieuw. (c) LOFAR/Groeneveld et al.\nEen internationaal team van onderzoekers\, onder leiding van Leidse sterrenkundigen\, heeft voor het eerst scherpe radiokaarten gemaakt van het heelal op lage frequenties. \nDankzij een nieuwe kalibratietechniek omzeilden ze de verstoringen van de aardse ionosfeer. Met de nieuwe methode bestudeerden ze plasma’s van oude uitbarstingen van zwarte gaten. Mogelijk is de techniek geschikt om exoplaneten vinden die om kleine sterren draaien. De onderzoekers publiceren hun techniek in Nature Astronomy. \nLinks:\nRadio-astronomen omzeilen storende aardatmosfeer met nieuwe kalibratietechniek
URL:https://www.a3veen.nl/event/radio-astronomen-omzeilen-storende-aardatmosfeer-met-nieuwe-kalibratietechniek-characterisation-of-the-decameter-sky-at-sub-arcminute-resolution-publication-publicatie/
CATEGORIES:Astronomie,Radiotechniek
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20240506
DTEND;VALUE=DATE:20240507
DTSTAMP:20260601T170250
CREATED:20240506T115810Z
LAST-MODIFIED:20240520T115853Z
UID:108099-1714953600-1715039999@www.a3veen.nl
SUMMARY:NASA Simulation’s Plunge Into a Black Hole: Explained - publication
DESCRIPTION:Ever wonder what happens when you fall into a black hole? \nThanks to an immersive visualization produced on a NASA supercomputer\, viewers can plunge into the event horizon\, a black hole’s point of no return. The visualizations are available in multiple forms. Explainer videos act as sightseeing guides\, illuminating the bizarre effects of Einstein’s general theory of relativity. Versions rendered as 360-degree videos let viewers look all around during the trip\, while others play as flat all-sky maps. To create the visualizations\, Schnittman teamed up with fellow Goddard scientist Brian Powell and used the Discover supercomputer at the NASA Center for Climate Simulation. The project generated about 10 terabytes of data — equivalent to roughly half of the estimated text content in the Library of Congress — and took about 5 days running on just 0.3% of Discover’s 129\,000 processors. The same feat would take more than a decade on a typical laptop. The destination is a supermassive black hole with 4.3 million times the mass of our Sun\, equivalent to the monster located at the center of the Milky Way galaxy. \nLinks:\nNew NASA Black Hole Visualization Takes Viewers Beyond the Brink
URL:https://www.a3veen.nl/event/nasa-simulations-plunge-into-a-black-hole-explained-publication/
CATEGORIES:Astronomie,Zwart gat
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20240506
DTEND;VALUE=DATE:20240507
DTSTAMP:20260601T170250
CREATED:20240506T140949Z
LAST-MODIFIED:20240605T194327Z
UID:108754-1714953600-1715039999@www.a3veen.nl
SUMMARY:Project Hephaistos – II. Dyson sphere candidates from Gaia DR3\, 2MASS\, and WISE - publication
DESCRIPTION:Astronomers find 60 Dyson sphere megastructure candidates among millions of searched stars. \nDyson spheres are gargantuan artificial structures\, built by extraterrestrial civilizations around around their stars\, with the goal of capturing energy. First proposed in 1960 by physicist Freeman Dyson\, they are an incredible thought experiment. Two teams of astronomers in Sweden and Italy recently conducted a new search for possible evidence of Dyson spheres. The astronomers examined 5 million stars\, up to 6\,500 light-years away and found 60 possible candidate stars. The stars\, both red dwarfs (or M dwarfs) and larger ones including sun-like stars\, are emitting up to 60 times more infrared heat than scientists expected. The results fit with what astronomers would expect to see from Dyson spheres. The teams found the candidates in the latest Gaia DR3 data from the European Gaia satellite as well as the Two Micron All Sky Survey (2MASS) and Wide-field Infrared Survey Explorer (WISE). The researchers said it is difficult to explain the observations with currently known natural processes. And even if the process is most likely a previously unknown natural phenomenon\, it’s still a fascinating discovery. \nLinks:\nAstronomers find 60 Dyson sphere candidates\, among millions of searched stars \nAlien ‘Dyson sphere’ megastructures could surround at least 7 stars in our galaxy\, new studies suggest \nBackground Contamination of the Project Hephaistos Dyson Spheres Candidates \nProject Hephaistos
URL:https://www.a3veen.nl/event/project-hephaistos-ii-dyson-sphere-candidates-from-gaia-dr3-2mass-and-wise-publication/
CATEGORIES:Astronomie
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Amsterdam:20240506T200000
DTEND;TZID=Europe/Amsterdam:20240506T213000
DTSTAMP:20260601T170250
CREATED:20240424T020325Z
LAST-MODIFIED:20240424T120539Z
UID:106747-1715025600-1715031000@www.a3veen.nl
SUMMARY:Hendrik de Waard Lecture : Our Universe Through the James Webb Space Telescope
DESCRIPTION:Where did we come from? What path leads us through the 13.8-billion-year history of the Universe\, connecting the particles and energy of the Big Bang to the formation of galaxies like the Milky Way\, stars like the Sun and planets like the Earth? \nThe James Webb Space Telescope\, built by NASA in partnership with the European and Canadian Space Agencies\, was designed to answer fundamental questions about the origins of galaxies\, stars and planets\, and to help us find our place in the Universe. Webb was launched on Christmas Day 2021 after 25 years of planning\, design\, development\, construction\, and testing. In this year’s Hendrik de Waard Lecture\, Jonathan P. Gardner will discuss why the first science results from Webb have engaged the public and surprised the scientists\, and which additional results can be expected in the years to come. \nLinks:\nHendrik de Waard Lecture : Our Universe Through the James Webb Space Telescope
URL:https://www.a3veen.nl/event/hendrik-de-waard-lecture-our-universe-through-the-james-webb-space-telescope/
LOCATION:RUG Academy Building Groningen\, Broerstraat 5\, Groningen\, Nederland
CATEGORIES:Astronomie
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20240507
DTEND;VALUE=DATE:20240509
DTSTAMP:20260601T170250
CREATED:20240507T145604Z
LAST-MODIFIED:20240508T152047Z
UID:107550-1715040000-1715212799@www.a3veen.nl
SUMMARY:2024 #HumansToMars Summit
DESCRIPTION:H2M 2024 will focus on questions that include:\n\nDo we have a viable mission architecture plan for Mars?\nWhat are the most significant technological hurdles (or long poles) that need to be overcome before humanity steps on the surface of Mars?\nDo we have an adequate pipeline of skilled workers to build our future in space?\nHow can governments and commercial industry collaborate to enable a human presence on Mars?\nCan we send humans to Mars in 2033?\nHow can innovations from Mars-focused R&D drive value and improvement on Earth\, and how can stakeholders contribute?\nWhat are the major Mars science achievements over the past year – and what are our objectives before humans first step foot on the surface?\nHow can we most effectively protect the physical and mental health of astronauts voyaging to and from Mars?\n\n\nLinks:\nHumans to Mars Summit
URL:https://www.a3veen.nl/event/2024-humanstomars-summit/
LOCATION:Washington DC\, Washington DC\, Verenigde Staten
CATEGORIES:Astronomie,Mars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Amsterdam:20240507T100000
DTEND;TZID=Europe/Amsterdam:20240507T110000
DTSTAMP:20260601T170250
CREATED:20240503T070351Z
LAST-MODIFIED:20240507T124959Z
UID:107300-1715076000-1715079600@www.a3veen.nl
SUMMARY:Meteorenzwerm η-Aquariden in mei 2024
DESCRIPTION:De meteorenzwerm η-Aquariden bereikt op dinsdag 7 mei 2024\, rond 10:00\, zijn maximum. \nDe meteoren van de η-Aquariden zijn snel en hebben nalichtende sporen. Wanneer 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 staat op dat moment zo’n 14° boven de oostzuidoostelijke 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 3–8 meteoren per uur zichtbaar. De Maan komt om 05:43 op\, is voor ongeveer 0% verlicht en stoort niet. Rond 05:15 gaat het schemeren en om 05:56 komt de Zon op. \nLinks:\nMeteorenzwerm η-Aquariden in mei 2024 \nEta Aquarid meteor shower 2024: Where\, when and how to see it
URL:https://www.a3veen.nl/event/meteorenzwerm-%ce%b7-aquariden-in-mei-2024/
CATEGORIES:Astronomie
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Amsterdam:20240513T230000
DTEND;TZID=Europe/Amsterdam:20240513T233000
DTSTAMP:20260601T170250
CREATED:20240513T080014Z
LAST-MODIFIED:20240513T080638Z
UID:107694-1715641200-1715643000@www.a3veen.nl
SUMMARY:The Sky at Night - Hiding in Starlight (TV BBC Four)
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:\nTotal solar eclipses\, like the one seen last month in North America\, allow us to see details of the Sun that can’t be seen at any other time. So\, this month\, The Sky at Night team looks at how scientists are creating eclipses on demand and discovering the secrets that can be revealed hidden in that starlight\, including habitable planets like our own. Maggie Aderin-Pocock travels to Belgium\, where the European Space Agency’s Proba-3 mission is going through its final testing stages. This groundbreaking mission aims to fly two satellites together in formation\, with one satellite acting like the moon during an eclipse\, blocking out the central light of the Sun. This allows the other satellite to image the corona\, the Sun’s outer atmosphere as seen during an eclipse. Maggie meets Dr Damien Galano from ESA\, who tells her all about the challenges of the mission and what it hopes to achieve. Maggie then goes on to meet satellite operations test engineer Marie Beeckman\, who takes her up close to the satellites to find out how the testing is going. Meanwhile\, Pete Lawrence is out and about in Bristol\, meeting a team of scientists and amateur astronomers. He discovers how input from the amateurs was crucial to the discovery of two exoplanets colliding\, which had caused the dimming of a star. Finally\, Chris Lintott is in Glasgow meeting Professor Beth Biller from Edinburgh University to discover why it is only by creating eclipses of distant stars that we could potentially find exoplanets more like our own. And as ever\, our resident astronomer\, Pete Lawrence\, guides us through what can be seen this coming month\, with a particular focus on the rewards of viewing in daylight – but as always\, he reminds us of the need to take care when doing this.\n\nLinks:\nThe Sky at Night
URL:https://www.a3veen.nl/event/the-sky-at-night-hiding-in-starlight-tv-bbc-four/
CATEGORIES:Astronomie
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Amsterdam:20240516T190000
DTEND;TZID=Europe/Amsterdam:20240516T203000
DTSTAMP:20260601T170250
CREATED:20240516T084218Z
LAST-MODIFIED:20240516T093044Z
UID:107879-1715886000-1715891400@www.a3veen.nl
SUMMARY:Babelsberger Sternennächte : A simple Recipe to make a Galaxy (TV webcast)
DESCRIPTION:Die 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 auf dem YouTube-Kanal von Urknall\, Weltall und das Leben ausgestrahlt wird (Playlist). \nGalaxien gibt es in verschiedenen Formen und Größen\, aber genau wie bei Kuchen oder Torten sind die Grundzutaten immer die gleichen. Die Wissenschaftlerin erklärt in ihrem Vortrag\, wie sich die Galaxien trotzdem unterscheiden\, welche Mechanismen die Entstehung und Entwicklung von Galaxien vorantreiben und ihre Struktur und ihr Aussehen beeinflussen. Sie geht dabei auch auf Wechselwirkungen der Galaxien miteinander ein und wie sich diese auf ihre Art und Größe auswirken. \nSobald der neue Vortrag verfügbar ist\, ist der Link direkt auf dieser Seite zu finden. Bitte beachten Sie\, dass fast alle Vorträge auf Deutsch gehalten werden. \nLink:\nBabelsberger Sternennächte \nVirtual lecture: Babelsberg Starry Night on 16 May 2024
URL:https://www.a3veen.nl/event/babelsberger-sternennachte-tv-webcast-20240516/
CATEGORIES:Astronomie
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20240518
DTEND;VALUE=DATE:20240519
DTSTAMP:20260601T170250
CREATED:20240516T152816Z
LAST-MODIFIED:20240518T141525Z
UID:107911-1715990400-1716076799@www.a3veen.nl
SUMMARY:Astronomy Day Spring 2024
DESCRIPTION:Astronomy Day is an annual event in various countries\, intended to provide a means of interaction between the general public and various astronomy enthusiasts\, groups and professionals. \nThe lunar influence on the schedule means that the events happen on a different date each year\, rather than set calendar dates. This event was started in 1973 by Doug Berger\, the president of the Astronomical Association of Northern California. His intent was to set up various telescopes in busy urban locations so that passersby could enjoy views of the heavens. Since then the event has expanded and is now sponsored by a number of organizations associated with astronomy. In 2007\, an autumn Astronomy Day was added. It was scheduled to occur on a Saturday between mid-September and mid-October so as to be on or close to the first quarter Moon. \nLinks:\nAstronomy Day Spring 2024
URL:https://www.a3veen.nl/event/astronomy-day-may-2024/
CATEGORIES:Astronomie
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20240522
DTEND;VALUE=DATE:20240523
DTSTAMP:20260601T170250
CREATED:20240523T050136Z
LAST-MODIFIED:20250510T175200Z
UID:108289-1716336000-1716422399@www.a3veen.nl
SUMMARY:Cost and Benefit Analysis of Mitigating\, Tracking and Remediating Orbital Debris - publication
DESCRIPTION:A report by NASA\, ‘Cost and Benefit Analysis of Mitigating\, Tracking and Remediating Orbital Debris‘\, compares the cost-effectiveness of more than 10 different strategies that could be used to reduce the risk of collisions between satellites and orbital debris. \nThe report outlines the most promising approaches to keeping the space around Earth safe and usable for future generations and finds that the solution could be more cost-effective than previously thought. From expensive actions such as dedicated space debris removal missions to better shielding of new satellites and improved tracking of the smallest space debris fragments\, there are many ways to protect the space environment from the potentially devastating effects of the growing amount of space junk orbiting Earth. The Kessler syndrome\, also known as the Kessler effect\, collisional cascading\, or ablation cascade\, is a scenario proposed by NASA scientists Donald J. Kessler and Burton G. Cour-Palais in 1978. It describes a situation in which the density of objects in low Earth orbit (LEO) becomes so high due to space pollution that collisions between these objects cascade\, exponentially increasing the amount of space debris over time. This proliferation of debris poses significant risks to satellites\, space missions\, and the International Space Station\, potentially rendering certain orbital regions unusable and threatening the sustainability of space activities for many generations. In 2009\, Kessler wrote that modeling results indicated the debris environment had already become unstable\, meaning that efforts to achieve a growth-free small debris environment by eliminating past debris sources would likely fail because fragments from future collisions would accumulate faster than atmospheric drag could remove them. The Kessler syndrome underscores the critical need for effective space traffic management and collision avoidance strategies to ensure the long-term viability of space exploration and utilization. \nLinks:\nSpace debris could be dealt with more cheaply than previously thought\, new NASA report suggests
URL:https://www.a3veen.nl/event/cost-and-benefit-analysis-of-mitigating-tracking-and-remediating-orbital-debris-publication/
CATEGORIES:Astronomie
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Amsterdam:20240528T233000
DTEND;TZID=Europe/Amsterdam:20240529T020000
DTSTAMP:20260601T170250
CREATED:20240528T075955Z
LAST-MODIFIED:20241017T105933Z
UID:108532-1716939000-1716948000@www.a3veen.nl
SUMMARY:EarthCARE - launch (TV ESA WebTV / ESA YouTube)
DESCRIPTION:Op 29-05-2024 wordt satelliet EarthCARE gelanceerd. \nEarthCARE is uitgerust met geavanceerde instrumenten om onze atmosfeer op een nieuwe manier te observeren. Met vier sensoren zal EarthCARE belangrijke gegevens verzamelen over (de interactie tussen) wolken\, fijnstof\, zonnestraling en warmtestraling\, waardoor wetenschappers een beter begrip krijgen van klimaatverandering. Ook is nieuw dat deze satelliet de driedimensionale structuur van de atmosfeer kan meten. EarthCARE is onderdeel van ESA’s Earth Explorer research missions\, de wetenschappelijke leiding van EarthCARE is in handen van het KNMI. \nLinks:\nWatch EarthCARE launch live \nDoor satelliet EarthCARE meer begrip van klimaatverandering \nSuccesvolle lancering van klimaatsatelliet EarthCARE \nSatelliet EarthCARE doet eerste succesvolle stralingsmetingen \nSamenwerking tussen EarthCARE’s satelliet-instrumenten
URL:https://www.a3veen.nl/event/earthcare-launch-tv-esa-webtv-esa-youtube/
CATEGORIES:Astronomie,Klimaat,Weer
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20240530
DTEND;VALUE=DATE:20240531
DTSTAMP:20260601T170250
CREATED:20240530T134548Z
LAST-MODIFIED:20240531T142913Z
UID:108749-1717027200-1717113599@www.a3veen.nl
SUMMARY:James Webb Space Telescope Finds Most Distant Known Galaxy
DESCRIPTION:Using the NASA/ESA/CSA James Webb Space Telescope (also called Webb or JWST)\, scientists have found a record-breaking galaxy\, JADES-GS-z14-0\, observed only 290 million years after the Big Bang. \nOver the last two years\, scientists have used NASA’s James Webb Space Telescope to explore what astronomers refer to as Cosmic Dawn – the period in the first few hundred million years after the big bang where the first galaxies were born. These galaxies provide vital insight into the ways in which the gas\, stars\, and black holes were changing when the universe was very young. In October 2023 and January 2024\, an international team of astronomers used Webb to observe galaxies as part of the JWST Advanced Deep Extragalactic Survey (JADES) program. Using Webb’s NIRSpec (Near-Infrared Spectrograph)\, they obtained a spectrum of a record-breaking galaxy observed only two hundred and ninety million years after the big bang. This corresponds to a redshift of about 14\, which is a measure of how much a galaxy’s light is stretched by the expansion of the universe. Based on data from Webb science in progress\, which has not yet been through the peer-review process. \nLinks:\nWebb finds most distant known galaxy \nWebb finds most distant known galaxy (JADES-GS-z14-0 annotated pullout NIRCam image) \nNASA’s James Webb Space Telescope Finds Most Distant Known Galaxy
URL:https://www.a3veen.nl/event/james-webb-space-telescope-finds-most-distant-known-galaxy/
CATEGORIES:Astronomie
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20240602
DTEND;VALUE=DATE:20240603
DTSTAMP:20260601T170250
CREATED:20240602T170320Z
LAST-MODIFIED:20240602T170320Z
UID:108806-1717286400-1717372799@www.a3veen.nl
SUMMARY:Meteorenzwerm ω-Scorpiiden in juni 2024
DESCRIPTION:Links:\nMeteorenzwerm ω-Scorpiiden in juni 2024
URL:https://www.a3veen.nl/event/meteorenzwerm-%cf%89-scorpiiden-in-juni-2024/
CATEGORIES:Astronomie
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Amsterdam:20240603T023000
DTEND;TZID=Europe/Amsterdam:20240603T053000
DTSTAMP:20260601T170250
CREATED:20240602T102439Z
LAST-MODIFIED:20240605T092535Z
UID:108823-1717381800-1717392600@www.a3veen.nl
SUMMARY:Planetenparade / Planetaire uitlijning 2024
DESCRIPTION:Planetenuitlijning\, klik op afbeelding voor infographic\nIn de vroege ochtend van 2 op 3 juni 2024 staan zes planeten – Mercurius\, Mars\, Jupiter\, Saturnus\, Uranus en Neptunus – in een bijna rechte lijn aan de lucht. \nZo’n planetenparade komt niet vaak voor en is dus best een bijzonder astronomisch fenomeen. Van de zes planeten zijn Mercurius\, Mars\, Jupiter en Saturnus met het blote oog te bewonderen. Om Neptunus en Uranus goed te kunnen zien heb je een telescoop of sterke verrekijker nodig. De planetaire uitlijning vindt plaats in de vroege ochtend en is ongeveer een uur voor zonsomkomst het best te zien. \nLinks:\nEen zeldzame planetenparade \nPlaneten parade: 6 planeten op één lijn met de maan in juni \nPlanetaire uitlijning 2024: Wat is het? Welke planeten zijn nu zichtbaar? \nDe planetaire uitlijning van 3 juni: dit moet je weten \nDie Parade der Planeten: Dieses Spektakel kannst du jetzt am Nachthimmel beobachten \nGoed kijken en vroeg opstaan: planetenparade nog enkele dagen (een beetje) te zien \nPlanetenparade / Planetaire uitlijning 2025
URL:https://www.a3veen.nl/event/planetenparade-planetaire-uitlijning-2024/
CATEGORIES:Astronomie
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20240605
DTEND;VALUE=DATE:20240606
DTSTAMP:20260601T170250
CREATED:20240329T192520Z
LAST-MODIFIED:20240605T085059Z
UID:105173-1717545600-1717631999@www.a3veen.nl
SUMMARY:Oleg Kononenko heeft als eerste persoon 1000 dagen van diens leven in de ruimte doorgebracht
DESCRIPTION:Oleg Dmitrijevitsj Kononenko (Russisch: Олег Дмитриевич Кононенко) (Tsjardzjo-oe\,Turkmeense SSR)\, 21 juni 1964) is een Russisch kosmonaut die op 5 juni 2024 als eerste persoon meer dan duizend uren van diens leven heeft doorgebracht in de ruimte. \nKononenko was vluchtingenieur voor twee ISS-missies: ISS Expeditie 17 en Sojoez TMA-12 die op 8 april 2008 aan ISS werd gekoppeld. Hij keerde terug naar de aarde op 24 oktober 2008. Kononenko was ook commandant van Sojoez-missie TMA-03M\, die op 21 december 2011 naar het ruimtestation ISS vertrok en op 1 juli 2012 landde en waaraan ook de Nederlander André Kuipers en de Amerikaan Don Pettit deelnamen. Zij maakten deel uit van ISS Expeditie 30 en ISS Expeditie 31. Oleg vloog voor zijn derde missie naar het Internationaal Ruimtestation op 22 juli 2015 als commandant van de Sojoez TMA-17M. Samen met NASA-astronaut Kjell Lindgren en de Japanse astronaut Kimiya Yui verbleef hij 5 maanden in het ruimtestation tijdens Expeditie 44 en Expeditie 45. De Sojoez koppelde af op 11 december 2015 en het drietal landde op de steppe van Kazachstan in een nachtlanding. Kononenko heeft een totaal van 736 dagen in de ruimte doorgebracht tijdens zijn vier ISS-missies. Hij vloog op 3 december 2018 opnieuw naar het ISS als commandant van Sojoez MS-11 samen met David Saint-Jacques en Anne McClain. Deze crew nam deel aan ISS-Expeditie 58 en ISS-Expeditie 59. Op 15 september 2023 werd Kononenko gelanceerd aan boord van Sojoez MS-24 en zal een jaar in het internationale ruimtestation verblijven en zal daar zijn duizendste dag in de ruimte beleven. \nLinks:\nNiemand was zo lang in de ruimte als kosmonaut Oleg Kononenko: hoe houdt hij dat vol? \nCosmonaut Oleg Kononenko sets world record for most time spent in space \nBiographies of USSR / Russian Cosmonauts: Kononenko
URL:https://www.a3veen.nl/event/oleg-kononenko-verwacht-als-eerste-persoon-1000-dagen-van-diens-leven-in-de-ruimte-te-hebben-doorgebracht/
CATEGORIES:Astronomie
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20240609
DTEND;VALUE=DATE:20240614
DTSTAMP:20260601T170250
CREATED:20240607T183458Z
LAST-MODIFIED:20250107T193721Z
UID:118699-1717891200-1718323199@www.a3veen.nl
SUMMARY:#AAS244 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:\n244th AAS meeting
URL:https://www.a3veen.nl/event/aas244-meeting/
CATEGORIES:Astronomie
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Amsterdam:20240610T230000
DTEND;TZID=Europe/Amsterdam:20240610T233000
DTSTAMP:20260601T170250
CREATED:20240610T075752Z
LAST-MODIFIED:20250212T142817Z
UID:109204-1718060400-1718062200@www.a3veen.nl
SUMMARY:The Sky at Night - Cosmic Ghosts (TV BBC Four)
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. \nBeginning 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:\nThis month\, The Sky at Night has a spooky twist. Across the universe\, there are hidden objects that we can’t see\, but astronomers and scientists still believe they’re out there. To find out how we know that these mysterious objects exist\, the team are going ghost-hunting. Cosmic ghost-hunting. \nProf Chris Lintott and Dr Maggie Aderin-Pocock are at Provan Hall\, one of the oldest buildings in Glasgow and the site of several supposed ghost sightings across its 550-year history. But they aren’t looking for anything supernatural. Instead\, they’re meeting the scientists and astronomers trying to solve some of the universe’s greatest mysteries by finding new ways to sense what surrounds us in the cosmos. \nIn the medieval rooms of Provan Hall\, Chris meets Dr Olivia Jones from the UK Astronomy Centre and discovers how a tool often employed by ghost hunters is actually great for finding objects hidden in the dust of the cosmos. He also meets Prof Tessa Baker from the University of Portsmouth\, who shows him how ripples in space-time are helping scientists to detect new\, unseen cosmic events. And while scanning the house for spooky sounds\, Maggie hears a voice from the past\, which leads her to uncover the wonderful work of Vera Rubin – a trailblazing astronomer who helped to prove the existence of dark matter. \nAcross the country\, and over a kilometre further below the Earth’s surface\, guest presenter Prof Chamkaur Ghag is at the Boulby Underground Laboratory. While there\, he discovers how the incredible research site has changed since Patrick Moore and The Sky at Night team visited 20 years ago and meets some of the Boulby team who are working on the hunt for ghostly dark matter particles. \nMeanwhile\, Pete Lawrence is at the Bedford School Observatory to show us how to find and photograph inky\, ghost-like objects in the sky known as dark nebulae\, and to tell us what to look out for in the night sky over the next month. \nLinks:\nThe Sky at Night
URL:https://www.a3veen.nl/event/the-sky-at-night-cosmic-ghosts-tv-bbc-four/
CATEGORIES:Astronomie
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Amsterdam:20240620T200000
DTEND;TZID=Europe/Amsterdam:20240620T210000
DTSTAMP:20260601T170250
CREATED:20240620T074923Z
LAST-MODIFIED:20240718T090338Z
UID:109701-1718913600-1718917200@www.a3veen.nl
SUMMARY:Babelsberger Sternennächte : Von 2024BX1 nach Ribbeck - Meteoritenfund in Brandenburg (TV webcast)
DESCRIPTION:Die 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 (Playlist). \nAsteroiden\, kleine Gesteinsbrocken im Sonnensystem\, kommen uns normalerweise nicht sehr nahe. Doch am 20. Januar 2024 wurde ein etwa ein Meter großes Exemplar entdeckt\, das nur knapp drei Stunden später auf die Erdoberfläche traf. Beim Eintritt in die Atmosphäre leuchtete das Objekt als mondhelle Feuerkugel auf\, die in der sternklaren Nacht weithin zu sehen war. Nach dem Ende der leuchtenden Bahn in rund 20 Kilometern Höhe gingen die Fragmente als Meteorite zu Boden. Beobachtungen der Feuerkugel durch Videokameras erlaubten eine genaue Berechnung des Fallortes\, der sich westlich von Nauen in Ribbeck befand. \nSofort wurden Suchaktionen organisiert\, um das frische Material schnell für Untersuchungen zu sichern. Ab dem 23. Januar wurden insgesamt mehr als 200 dokumentierte Fundstücke eingesammelt und untersucht. Dabei stellte sich heraus\, dass die Meteoriten aus dem überaus seltenen Material Aubrit bestehen. Der Meteoritentyp Aubrit ist benannt nach dem Fundort des ersten derartigen Stückes in Aubres\, Frankreich\, 1836. Der Kleinkörper stammt wahrscheinlich aus einem heißen Bereich unseres Sonnensystems und erlebte in seiner Geschichte viele Zusammenstöße mit anderen Gesteinsbrocken. So ist das Material sehr fragil; viele Stücke sind beim Aufprall zersplittert. Die Schmelzkruste ist glasartig und voller Blasen und muss sehr schnell erstarrt sein. Einzelne Meteoritenproben befinden sich noch in Laboren für Isotopenuntersuchungen. Dies ist erst das vierte Mal\, dass Stücke eines zuvor als Asteroid beobachteten Objekts am Boden zu finden waren. \n„Es ist ein großartiger Glückstreffer\, dass der Asteroid mitten in Europa\, sozusagen vor unserer Haustür\, einschlug\, und seine Bahn genau berechnet werden konnte“\, sagt Dr. Jürgen Rendtel\, Mitarbeiter der Abteilung Sonnenphysik\, Experte für Meteoriten und erfolgreicher Finder mehrere Meteoritenstücke. Er erzählt in seinem Vortrag mit dem Titel „Von 2024BX1 nach Ribbeck“ von der Entdeckung des Asteroiden und der mühsamen Suche nach den Bruchstücken auf den Feldern bei Ribbeck. Dabei geht er auch auf die besonderen Eigenschaften des Materials ein. Eine Zusammenfassung der Meteoritensuche und bisherigen Ergebnisse erscheint am 26.06.2024 in einem Artikel von Jürgen Rendtel und Koautoren in der Zeitschrift WGN\, The Journal of the International Meteor Organization. \nBitte beachten Sie\, dass fast alle Vorträge auf Deutsch gehalten werden. \nLink:\nBabelsberger Sternennächte
URL:https://www.a3veen.nl/event/babelsberger-sternennachte-von-2024bx1-nach-ribbeck-meteoritenfund-in-brandenburg-tv-webcast/
CATEGORIES:Astronomie
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20240621
DTEND;VALUE=DATE:20240622
DTSTAMP:20260601T170250
CREATED:20240713T125405Z
LAST-MODIFIED:20240713T140224Z
UID:110676-1718928000-1719014399@www.a3veen.nl
SUMMARY:Transmission Spectroscopy of the Habitable Zone Exoplanet LHS 1140 b with JWST/NIRISS - publication
DESCRIPTION:Located 50 light-years from Earth\, the beady-eyed exoplanet LHS 1140 b could be a perfect candidate for discovering liquid water outside the solar system\, research ‘Transmission Spectroscopy of the Habitable Zone Exoplanet LHS 1140 b with JWST/NIRISS‘ suggests. \nLinks:\nHabitable Zone Exoplanet LHS 1140b is Probably Snowball or Water World \n‘Eyeball’ planet spied by James Webb telescope might be habitable
URL:https://www.a3veen.nl/event/transmission-spectroscopy-of-the-habitable-zone-exoplanet-lhs-1140-b-with-jwst-niriss-publication/
CATEGORIES:Astronomie,Exoplaneet
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Amsterdam:20240625T232600
DTEND;TZID=Europe/Amsterdam:20391025T000000
DTSTAMP:20260601T170250
CREATED:20241025T055924Z
LAST-MODIFIED:20241025T211716Z
UID:115444-1719357960-2203113600@www.a3veen.nl
SUMMARY:GOES-19
DESCRIPTION:GOES-19 (designated GOES-U prior to reaching geostationary orbit) is a weather satellite\, the fourth and last of the GOES-R series of satellites operated by the National Oceanic and Atmospheric Administration (NOAA). \nThe GOES-R series will extend the availability of the Geostationary Operational Environmental Satellite (GOES) system until 2036. The satellite is built by Lockheed Martin\, based on the A2100 platform. The satellite was successfully launched into space atop a SpaceX Falcon Heavy rocket on 25 June 2024 at 21:26 UTC from the Kennedy Space Center in Florida\, United States. The redesign of the loop heat pipe to prevent an anomaly\, as seen in GOES-17\, is not expected to delay the launch as it did with GOES-T. GOES-U also carries a copy of the Naval Research Laboratory’s Compact CORonagraph (CCOR) instrument which\, along with the CCOR planned for Space Weather Follow On-Lagrange 1 (SWFO-L1)\, will allow continued monitoring of solar wind after the retirement of the NASA–ESA SOHO satellite in 2025. GOES-U has a dry mass of 2\,925 kg and a fueled mass of 5\,000 kg. \nLinks:\nGEOS – R\n\nGOES-U Mission Overview \nSatellite: GOES-19 \nWatch sun erupt in 1st images from NOAA’s groundbreaking new satellite (photos)
URL:https://www.a3veen.nl/event/goes-19/
CATEGORIES:Astronomie
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20240626
DTEND;VALUE=DATE:20240627
DTSTAMP:20260601T170250
CREATED:20241203T170957Z
LAST-MODIFIED:20250131T105549Z
UID:117501-1719360000-1719446399@www.a3veen.nl
SUMMARY:Asteroid (101955) Bennu in the laboratory: Properties of the sample collected by OSIRIS-REx - publication
DESCRIPTION:On September 24\, 2023\, NASA’s OSIRIS-REx spacecraft dropped a capsule to Earth containing pristine carbonaceous regolith collected from the near-Earth asteroid Bennu\, these samples were obtained after the probe took an impressive\, seven-year roundtrip journey through the solar system and back. \nSince these space rock pieces arrived (approximately 120 grams of sample\, to be precise) scientists have highly anticipated an analysis of the specimens that can tell us what molecules lie within Bennu.  They’ve been hoping to find clues about the history of our solar system\, seeing as Bennu should’ve been present when our cosmic neighborhood was coming together\, and prebiotic molecules that might provide insights into the origin of life on Earth. It’s possible\, many experts speculated\, that these samples could host the seeds of other essential ingredients\, such as water\, that could have contributed to Earth’s habitability if they ended up on our planet\, too. The paper about the results was published in the journal Meteoritics & Planetary Science. \nLinks:\nPhosphate in NASA’s OSIRIS-REx asteroid sample suggests space rock Bennu hails from an ocean world / NASA’s Asteroid Samples May Be Crumbs From an Ancient Ocean World \nPekel van planetoïde Bennu bevat mineralen die cruciaal zijn voor leven / An evaporite sequence from ancient brine recorded in Bennu samples – publication
URL:https://www.a3veen.nl/event/asteroid-101955-bennu-in-the-laboratory-properties-of-the-sample-collected-by-osiris-rex-publication/
CATEGORIES:Astronomie
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Amsterdam:20240629T080000
DTEND;TZID=Europe/Amsterdam:20240629T170000
DTSTAMP:20260601T170250
CREATED:20240629T172408Z
LAST-MODIFIED:20240629T172910Z
UID:110064-1719648000-1719680400@www.a3veen.nl
SUMMARY:Meteorenzwerm τ-Aquariden in juni 2024
DESCRIPTION:De meteorenzwerm τ-Aquariden bereikt op zaterdag 29 juni 2024\, rond 17:00\, zijn maximum. \nWanneer de radiant in het zenit zou staan\, zouden er van deze zwerm naar verwachting gemiddeld zo’n 7 meteoren per uur vallen. Rond 06:00 staat de radiant van de zwerm in het hoogste punt (op 26°) aan de hemel. Het beste moment om τ-Aquariden waar te nemen is op 30 juni rond 04:00. Dat is circa 11 uur na het moment van het maximum\, wat niet ideaal is voor een zwerm met een korte piek als deze. Hierdoor zijn zeker 30% minder meteoren te zien dan in het meest gunstige geval. De radiant staat op dat moment zo’n 22° boven de zuidzuidoostelijke 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 2–6 “vallende sterren” per uur te zien. De Maan komt om 01:38 op\, is voor ongeveer 35% verlicht en kan eventueel storen. Rond 04:30 gaat het schemeren en om 05:23 komt de Zon op. \nLinks:\nMeteorenzwerm τ-Aquariden in juni 2024
URL:https://www.a3veen.nl/event/meteorenzwerm-%cf%84-aquariden-in-juni-2024/
CATEGORIES:Astronomie
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