BEGIN:VCALENDAR VERSION:2.0 PRODID:-//A3veen.nl - ECPv6.16.3//NONSGML v1.0//EN CALSCALE:GREGORIAN METHOD:PUBLISH X-WR-CALNAME:A3veen.nl X-ORIGINAL-URL:https://www.a3veen.nl X-WR-CALDESC:Evenementen voor A3veen.nl REFRESH-INTERVAL;VALUE=DURATION:PT1H X-Robots-Tag:noindex X-PUBLISHED-TTL:PT1H BEGIN:VTIMEZONE TZID:Europe/Amsterdam BEGIN:DAYLIGHT TZOFFSETFROM:+0100 TZOFFSETTO:+0200 TZNAME:CEST DTSTART:20200329T010000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:+0200 TZOFFSETTO:+0100 TZNAME:CET DTSTART:20201025T010000 END:STANDARD BEGIN:DAYLIGHT TZOFFSETFROM:+0100 TZOFFSETTO:+0200 TZNAME:CEST DTSTART:20210328T010000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:+0200 TZOFFSETTO:+0100 TZNAME:CET DTSTART:20211031T010000 END:STANDARD BEGIN:DAYLIGHT TZOFFSETFROM:+0100 TZOFFSETTO:+0200 TZNAME:CEST DTSTART:20220327T010000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:+0200 TZOFFSETTO:+0100 TZNAME:CET DTSTART:20221030T010000 END:STANDARD BEGIN:DAYLIGHT TZOFFSETFROM:+0100 TZOFFSETTO:+0200 TZNAME:CEST 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SUMMARY:#UnfoldTheUniverse #JWST James Webb Space Telescope / Henrietta Leavitt Teleskop DESCRIPTION:The James Webb Space Telescope (JWST or “Webb” / called Henrietta Leavitt Teleskop by german scientists Harald Lesch and Josef M. Gaßner) is a space telescope to succeed the Hubble Space Telescope as NASA‘s flagship astrophysics mission. \nThe JWST will provide improved infrared resolution and sensitivity over Hubble\, and will enable a broad range of investigations across the fields of astronomy and cosmology\, including observing some of the most distant events and objects in the universe\, such as the formation of the first galaxies. The primary mirror of the JWST\, the Optical Telescope Element\, is composed of eighteen 1.32 metres hexagonal mirror segments made of gold-plated beryllium which combine to create a 6.5 metres diameter mirror that is considerably larger than the Hubble’s 2.4 metres mirror. Unlike the Hubble\, which observes in the near ultraviolet\, visible\, and near infrared (0.1 to 1 μm) spectra\, the JWST will observe in a lower frequency range\, from long-wavelength visible light through mid-infrared (0.6 to 28.3 μm)\, which will allow it to observe high redshift objects that are too old and too distant for the Hubble to observe. \nThe telescope must be kept very cold in order to observe in the infrared without interference\, so it will be deployed in space near the Earth–Sun L2 Lagrangian point\, and a large sunshield made of silicon-coated and aluminium-coated Kapton will keep its mirror and instruments below 50 Kelvin (K). The JWST is being developed by NASA — with significant contributions from the European Space Agency and the Canadian Space Agency — and is named for James E. Webb\, who was the administrator of NASA from 1961 to 1968 and played an integral role in the Apollo program. The prime contractor is Northrop Grumman. Development began in 1996 for a launch that was initially planned for 2007 and a 500-million-dollar budget\, but the project has had numerous delays and cost overruns\, and underwent a major redesign in 2005. The JWST’s construction was completed in late 2016\, after which its extensive testing phase began. The launch date was Dec. 25\, 2021. \n\nLinks:\nJames Webb Space Telescope \nJames Webb Space Telescope -ESA \nWebb Home \nWebb Space Telescope \nNASA’s James Webb Space Telescope – Flickr \nJADES will go deeper than the Hubble Deep Fields \nJames Webb Space Telescope / Henrietta Leavitt Teleskop – playlist \nNASA’s Webb In Full Focus\, Ready for Instrument Commissioning \nNieuwe ruimtetelescoop kijkt naar het begin van de tijd – of net ietsje later \nWebb is now orbiting L2 \nPhotons Received: Webb Sees Its First Star – 18 Times \nNASA emails reveal internal discussions over calls to rename James Webb Space Telescope: report \nFirst Images From NASA’s Webb Space Telescope Coming Soon \nNo\, the Big Bang theory is not ‘broken.’ Here’s how we know \nWebb Looks for Fomalhaut’s Asteroid Belt and Finds Much More \nJames Webb spot monsterachtige waterpluim op Enceladus \nWebb Space Telescope’s First Year of Science Celebration \nWebb Discovers Methane\, Carbon Dioxide in Atmosphere of K2-18 b \nNASA’s James Webb Space Telescope (Flickr) \nThe (Unofficial) JWST Exoplanet Dashboard \nJWST facing potential cuts to its operational budget \nStrongest hints yet of biological activity outside the solar system / New Constraints on DMS and DMDS in the Atmosphere of K2-18 b from JWST MIRI – publication URL:https://www.a3veen.nl/event/unfoldtheuniverse-jwst-james-webb-space-telescope-henrietta-leavitt-teleskop/ CATEGORIES:Astronomie END:VEVENT BEGIN:VEVENT DTSTART;VALUE=DATE:20221216 DTEND;VALUE=DATE:20251217 DTSTAMP:20260613T151425 CREATED:20231122T141648Z LAST-MODIFIED:20231122T141731Z UID:99037-1671148800-1765929599@www.a3veen.nl SUMMARY:Surface Water and Ocean Topography (SWOT) mission DESCRIPTION:The Surface Water and Ocean Topography (SWOT) mission is a satellite altimeter jointly developed and operated by NASA and CNES\, the French space agency\, in partnership with the Canadian Space Agency (CSA) and UK Space Agency (UKSA). \nThe objectives of the mission are to make the first global survey of the Earth’s surface water\, to observe the fine details of the ocean surface topography\, and to measure how terrestrial surface water bodies change over time. While past satellite missions like the Jason series altimeters (TOPEX/Poseidon\, Jason-1\, Jason-2\, Jason-3) have provided variation in river and lake water surface elevations at select locations\, SWOT will provide the first truly global observations of changing water levels\, stream slopes\, and inundation extents in rivers\, lakes\, and floodplains. In the world’s oceans\, SWOT will observe ocean circulation at unprecedented scales of 15–25 km (9.3–15.5 mi)\, approximately an order of magnitude finer than current satellites. Because it uses wide-swath altimetry technology\, SWOT will almost completely observe the world’s oceans and freshwater bodies with repeated high-resolution elevation measurements\, allowing observations of variations. \nLinks:\nSurface Water and Ocean Topography at NASA.gov \nOcean Surface Topography from Space at NASA.gov \nCnes project Library at CNES.fr \nAVISO+ portal for SWOT URL:https://www.a3veen.nl/event/surface-water-and-ocean-topography-swot-mission/ CATEGORIES:Astronomie,Geografie,kennis END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Amsterdam:20230413T141500 DTEND;TZID=Europe/Amsterdam:20351213T170000 DTSTAMP:20260613T151425 CREATED:20230730T164118Z LAST-MODIFIED:20230730T165113Z UID:92740-1681395300-2081178000@www.a3veen.nl SUMMARY:JUpiter ICy moons Explorer DESCRIPTION:The JUpiter ICy moons Explorer (JUICE) is an interplanetary spacecraft in development by the European Space Agency (ESA) with Airbus Defence and Space as the main contractor. \nThe mission will study three of Jupiter‘s Galilean moons: Ganymede\, Callisto\, and Europa\, all of which are thought to have significant bodies of liquid water beneath their surfaces\, making them potentially habitable environments. The mission is not focused on volcanically active Io\, a non-icy moon. The spacecraft launched on 14 April 2023 at 12:14 UTC and will reach Jupiter in July 2031 after four gravity assists and eight years of travel. In December 2034\, the spacecraft will enter orbit around Ganymede for its close up science mission\, becoming the first spacecraft to orbit a moon other than the Moon of Earth. The selection of this mission for the L1 launch slot of ESA’s Cosmic Vision science programme was announced on 2 May 2012. Its period of operations will overlap with NASA‘s Europa Clipper mission\, launching in 2024. \n\n\nNASA’s Juno Is Getting Ever Closer to Jupiter’s Moon Io Links:\nESA’s JUICE \nJuice \nAgenda – JUpiter ICy moons Explorer : launch / Agenda – JUpiter ICy moons Explorer : launch 2nd attempt \nJuice pre-launch press briefing \nHow to follow the Juice launch live URL:https://www.a3veen.nl/event/jupiter-icy-moons-explorer/ CATEGORIES:Astronomie,Jupiter END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Amsterdam:20230701T171100 DTEND;TZID=Europe/Amsterdam:20290701T171100 DTSTAMP:20260613T151425 CREATED:20230809T130227Z LAST-MODIFIED:20241120T082444Z UID:93109-1688231460-1877620260@www.a3veen.nl SUMMARY:Cosmic Vision : Euclid space telescope / Euclides DESCRIPTION:Euclid is a visible to near-infrared space telescope developed by the European Space Agency (ESA) and the Euclid Consortium\, the objective of the Euclid mission is to better understand dark energy and dark matter by accurately measuring the acceleration of the universe. \nTo achieve this\, the Korsch-type telescope will measure the shapes of galaxies at varying distances from Earth and investigate the relationship between distance and redshift. Dark energy is generally accepted as contributing to the increased acceleration of the expanding universe\, so understanding this relationship will help to refine how physicists and astrophysicists understand it. Euclid’s mission advances and complements ESA’s Planck telescope (2009 to 2013). The mission is named after the ancient Greek mathematician Euclid. Euclid is a medium-class (“M-class”) mission and is part of the Cosmic Vision campaign of ESA’s Science Programme. This class of missions have an ESA budget cap at around €500 million. Euclid was chosen in October 2011 together with Solar Orbiter\, out of several competing missions. Prior to the Russian invasion of Ukraine\, the launch was scheduled on a Soyuz ST-B in 2023; following the invasion\, Euclid will instead be launched on a Falcon 9 Block 5 on 1 July 2023. \nLinks:\nEuclid \nHow to follow the Euclid launch live \nRuimtetelescoop Euclid wil uitvinden waar het heelal van gemaakt is \nEuclid test images tease of riches to come \nEuclid ‘dark universe’ telescope team will unveil new full-color images today (May 23) \nZoom into the first page of ESA Euclid’s great cosmic atlas \nSpace Warps – ESA Euclid / Euclid Galaxy Zoo – help us classify the shapes of galaxies URL:https://www.a3veen.nl/event/euclid-space-telescope-euclides/ CATEGORIES:Astronomie END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Amsterdam:20240208T073300 DTEND;TZID=Europe/Amsterdam:20270208T170000 DTSTAMP:20260613T151425 CREATED:20240209T204257Z LAST-MODIFIED:20240209T204747Z UID:102637-1707377580-1802106000@www.a3veen.nl SUMMARY:Plankton\, Aerosol\, Cloud\, ocean Ecosystem DESCRIPTION:Plankton\, Aerosol\, Cloud\, ocean Ecosystem (PACE) is a NASA Earth-observing satellite mission that will continue and advance observations of global ocean color\, biogeochemistry\, and ecology\, as well as the carbon cycle\, aerosols and clouds. \nPACE will be used to identify the extent and duration of phytoplankton blooms and improve understanding of air quality. These and other uses of PACE data will benefit the economy and society\, especially sectors that rely on water quality\, fisheries and food security. After being proposed for cancellation under President Trump’s FY 2018 budget\, it was restored by Congress. The PACE project is managed by NASA Goddard Space Flight Center. The main instrument and bus were designed and built at Goddard Space Flight Center. On 4 February 2020\, NASA announced the selection of SpaceX to launch PACE on a Falcon 9\, at a total cost to NASA of US$80.4 million\, including the launch service and other mission-related costs. The total cost of the mission is $964 million\, which includes spacecraft construction\, launch\, and operations. PACE successfully launched on 8 February 2024 at 07:33. \nLinks:\nPACE URL:https://www.a3veen.nl/event/plankton-aerosol-cloud-ocean-ecosystem/ CATEGORIES:Astronomie END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Amsterdam:20240625T232600 DTEND;TZID=Europe/Amsterdam:20391025T000000 DTSTAMP:20260613T151425 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:20240901 DTEND;VALUE=DATE:20290902 DTSTAMP:20260613T151425 CREATED:20240403T074223Z LAST-MODIFIED:20240403T174651Z UID:105492-1725148800-1883001599@www.a3veen.nl SUMMARY:Proba-3 Missie / Proba-3 Mission DESCRIPTION:By ESA\, CC BY-SA 3.0 igo\nProba-3 zijn twee minisatellieten van de Europese Ruimtevaartorganisatie (ESA)\, ze zullen samen gelanceerd worden in een langgerekte ellipsvormige baan met een perigeum van 600 km en apogeum van 60.000 km. \nProba-3 wordt gerealiseerd door een consortium van vijftien ESA-lidstaten met als hoofdaannemer het Spaanse SENER\, het Belgische Centre Spatial uit Luik als hoofdaannemer voor de coronagraaf en het Belgische Redwire Space voor assemblage en testen. Tijdens de missie zullen twee satellieten in formatie vliegen en samen een 144 meter lange zonnecoronagraaf vormen om de corona van de zon bij de zonnerand te bestuderen. Eén ruimtevaartuig zal de optische telescoop dragen en het tweede ruimtevaartuig zal een deel van de coronagraaf dragen. Tevens worden tijdens deze missie metingen uitgevoerd voor de positionering van twee ruimtevaartuigen. \nLinks:\nProba-3 Mission URL:https://www.a3veen.nl/event/proba-3-missie-proba-3-mission/ CATEGORIES:Astronomie,Zon END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Amsterdam:20241007T165200 DTEND;TZID=Europe/Amsterdam:20261231T235900 DTSTAMP:20260613T151425 CREATED:20240415T075035Z LAST-MODIFIED:20241024T161412Z UID:106201-1728319920-1798761540@www.a3veen.nl SUMMARY:Hera space mission DESCRIPTION:Hera is a space mission in development at the European Space Agency in its Space Safety program\, its primary objective is to study the Didymos binary asteroid system that was impacted by DART and contribute to validation of the kinetic impact method to deviate a near-Earth asteroid in a colliding trajectory with Earth. \nIt will measure the size and the morphology of the crater created by and momentum transferred by an artificial projectile impacting an asteroid\, which will allow measuring the efficiency of the deflection produced by the impact. It will also analyze the expanding debris cloud caused by the impact. The spacecraft was launched on 7 October 2024 and will also study the results of DART impactor\, four years after NASA’s mission. DART impacted the asteroid Dimorphos\, the smaller of two objects forming the binary asteroid 65803 Didymos\, on 27 September 2022. Hera has a mass of 1128 kilograms and carries a payload of cameras\, an altimeter\, and a spectrometer. It will also carry two nano-satellite CubeSats\, called Milani and Juventas. Hera will fully characterise the composition and physical properties of the binary asteroid system including\, for the first time\, the sub-surface and internal structures. It will also perform technological demonstrations linked to operations in the vicinity of a small body and the deployment and the communication with CubeSats in interplanetary space. \nHera’s launch kit\, click picture to read\nLinks:\nESA Hera \nThermophysical Modelling of Eclipse and Occultation Events in Binary Asteroid Systems \nPlanetary defence mission Hera heading for deflected asteroid \nSpaceX rocket launches Europe’s Hera planetary defense probe to visit asteroid smacked by NASA URL:https://www.a3veen.nl/event/hera-space-mission/ CATEGORIES:Astronomie END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Amsterdam:20241014T120600 DTEND;TZID=Europe/Amsterdam:20301014T235900 DTSTAMP:20260613T151425 CREATED:20240428T043612Z LAST-MODIFIED:20241014T151635Z UID:106946-1728907560-1918252740@www.a3veen.nl SUMMARY:NASA’s Europa Clipper Mission DESCRIPTION:Europa Clipper (previously known as Europa Multiple Flyby Mission) is a space probe in development by NASA. \nPlanned for launch aboard a Falcon Heavy in October 2024 (the 21-day launch window period opens on October 10\, 2024)\, the spacecraft is being developed to study the Galilean moon Europa through a series of flybys while in orbit around Jupiter\, it is the largest spacecraft NASA has ever developed for a planetary mission. This mission is a scheduled flight of the Planetary Science Division\, designated a Large Strategic Science Mission\, and funded under the Planetary Missions Program Office‘s Solar System Exploration program as its second flight. It is also supported by the new Ocean Worlds Exploration Program. Europa Clipper will perform follow-up studies to those made by the Galileo spacecraft during its eight years (1995 – 2003) in Jupiter orbit\, which indicated the existence of a subsurface ocean underneath Europa’s ice crust. Plans to send a spacecraft to Europa were initially conceived with projects such as Europa Orbiter and Jupiter Icy Moons Orbiter\, in which a spacecraft would be injected into orbit around Europa. However\, due to the adverse effects of radiation from Jupiter’s magnetosphere in Europa orbit\, it was decided that it would be safer to inject a spacecraft into an elliptical orbit around Jupiter and make 44 close flybys of the moon instead. The mission began as a joint investigation between the Jet Propulsion Laboratory (JPL) and the Applied Physics Laboratory (APL)\, and will be built with a scientific payload of nine instruments contributed by JPL\, APL\, Southwest Research Institute\, University of Texas at Austin\, Arizona State University and University of Colorado Boulder. The upcoming mission complements ESA‘s Jupiter Icy Moons Explorer launched in 2023\, which will fly-by Europa twice and Callisto multiple times before moving into orbit around Ganymede. The spacecraft will use gravity assists from Mars in February 2025 and Earth in December 2026\, before arriving at Europa in April 2030. NASA will provide live coverage of prelaunch and launch activities for Europa Clipper\, the agency’s mission to explore Jupiter’s icy moon Europa. NASA now is targeting launch no earlier than 18:06 CEST\, Monday\, Oct. 14\, on a SpaceX Falcon Heavy rocket from Launch Complex 39A at NASA’s Kennedy Space Center in Florida. \nLinks:\nNASA’s Europa Clipper Mission \nEuropa Clipper \nThe search for life on Jupiter’s moon Europa – the Europa Clipper Mission \n8 Things to Know About NASA’s Mission to an Ocean Moon of Jupiter \nNASA\, SpaceX Secure Europa Clipper Ahead of Hurricane (Milton) URL:https://www.a3veen.nl/event/nasas-europa-clipper-mission/ CATEGORIES:Astronomie,Jupiter END:VEVENT BEGIN:VEVENT DTSTART;VALUE=DATE:20250101 DTEND;VALUE=DATE:20260101 DTSTAMP:20260613T151425 CREATED:20250101T143613Z LAST-MODIFIED:20250517T175907Z UID:119432-1735689600-1767225599@www.a3veen.nl SUMMARY:#Hubble35 Hubble Telescope – 35th Anniversary Hubble’s Night Sky Challenge DESCRIPTION:Hubble is working with The Astronomical League to coordinate the “Hubble’s Night Sky Observing Challenge” program\, providing successful observers with recognition of their achievements. \nThe challenge includes two levels and observers do not need to be an Astronomical League member to participate. Do you have a telescope? Would you like to see some of the same night sky objects from the ground that Hubble has from space? You are invited to commemorate Hubble’s 35th anniversary by accepting our year-long stargazing challenge. New challenge objects will be featured weekly. On a clear night\, find a safe location with a dark sky away from bright lights\, point your telescope skyward\, and with the help of star and finder charts\, gaze upon some of the same iconic nebulae and galaxies Hubble has observed. How many of them can you find? For amateur astronomy clubs\, science centers\, museums\, and other astronomy enthusiasts\, use these monthly lists as a guide to conduct star parties that provide an opportunity for the public to see some amazing astronomical objects in person. \nLinks:\nHubble’s Night Sky Challenge URL:https://www.a3veen.nl/event/hubble-telescope-35th-anniversary-observing-challenge/ CATEGORIES:Astronomie END:VEVENT BEGIN:VEVENT DTSTART;VALUE=DATE:20250110 DTEND;VALUE=DATE:20270101 DTSTAMP:20260613T151425 CREATED:20250124T135940Z LAST-MODIFIED:20250324T142655Z UID:122257-1736467200-1798761599@www.a3veen.nl SUMMARY:Save the Observatory Science Centre Herstmonceux - petition DESCRIPTION:The Observatory Science Centre is an educational charity which has called the Grade II listed\, former home of the Royal Greenwich Observatory at Herstmonceux\, East Sussex\, home for the last 30 years. \nThe Canadian landlords\, Queen’s University\, who also own Herstmonceux Castle\, are not renewing the Science Centre’s lease\, so come the end of the 2026 season the Science Centre will be homeless. Over the years the science centre have worked tirelessly to fund and restore the site and the telescopes back to their former glory. The centre is a major venue for exhibitions\, lectures and educational programmes. The renovated telescopes provide a unique setting for the general public\, schools\, colleges\, and brownie and scout groups to learn about science\, space and the world around them. Whilst the Science Centre is in search for a new site to continue operations beyond 2026\, they should not have to leave the Observatory site at all and the historic site should be preserved for future generations as a great educational tool of significant historical importance. Please sign this petition for someone to step in and prevent the Science Centre from having to leave the Observatory site. \nLinks:\nSave the Observatory Science Centre Herstmonceux \nHerstmonceux Observatory Campaign Group URL:https://www.a3veen.nl/event/save-the-observatory-science-centre-herstmonceux-petition/ CATEGORIES:Astronomie,Cultuur END:VEVENT BEGIN:VEVENT DTSTART;VALUE=DATE:20250429 DTEND;VALUE=DATE:20300430 DTSTAMP:20260613T151425 CREATED:20250410T010724Z LAST-MODIFIED:20250410T111116Z UID:123054-1745884800-1903737599@www.a3veen.nl SUMMARY:Biomass : ESA's forest mission DESCRIPTION:Biomass is an Earth observing satellite planned for launch by the European Space Agency (ESA) on 29 April 2025 from Kourou\, French Guiana on a Vega C launch vehicle\, the mission will provide the first comprehensive measurements of global forest biomass. \nIt is meant to last for five years\, monitoring at least eight growth cycles in the world’s forests. The Biomass satellite is part of ESA’s Living Planet Programme\, which consists of Earth observation missions. Its initial launch date was set to 2020\, but that has since been delayed to 2025. The entire cost of the mission was placed at around 400 million euros. The main scientific instrument aboard Biomass will be a synthetic aperture radar (SAR) operating at 435 MHz. The satellite will measure 10 x 12 x 20m\, weigh around 1.2 tonnes and it is set to orbit the Earth at an altitude of 666 km. All devices for assembly of the satellite structure\, including vertical transport equipment\, assembly and disassembly of satellite panels\, assembly and disassembly of the Synthetic Aperture Radar are done by the Spanish company SENER. \nLinks:\nBiomass – ESA \n#ForestDay #IntlForestDay Day of Forests / Dag van het Bos 2025 (TV FAO webcast) URL:https://www.a3veen.nl/event/biomass-esas-forest-mission/ CATEGORIES:Astronomie,Biologie,Bossen,kennis,Natuur END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Amsterdam:20250515T191500 DTEND;TZID=Europe/Amsterdam:20250515T201500 DTSTAMP:20260613T151425 CREATED:20250515T085341Z LAST-MODIFIED:20250919T084435Z UID:125572-1747336500-1747340100@www.a3veen.nl SUMMARY:Babelsberger Sternennächte – Keine Dunkle Materie? MOND: Bullet Cluster\, Rotationskurven & Zwerggalaxien | Marcel Pawlowski (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. \nKann die Gravitation wirklich anders funktionieren als gedacht? In diesem Beitrag spricht Marcel Pawlowski über MOND – die modifizierte Newtonsche Dynamik – als mögliche Alternative zur dunklen Materie. Er erklärt\, warum es im Sonnensystem keine Hinweise auf dunkle Materie gibt\, diskutiert die Herausforderungen durch Zwerggalaxien und beleuchtet den Bullet Cluster als Kontra-Argument. Auch neue Beobachtungen mit dem James-Webb-Teleskop und deren Einfluss auf das kosmologische Standardmodell werden eingeordnet. \nLinks:\nBabelsberger Sternennächte \nBabelsberger Sternennächte – playlist URL:https://www.a3veen.nl/event/babelsberger-sternennachte-sonne-und-weltraumwetter-dr-christian-vocks-tv-webcast/ CATEGORIES:Astronomie END:VEVENT BEGIN:VEVENT DTSTART;VALUE=DATE:20250520 DTEND;VALUE=DATE:20250521 DTSTAMP:20260613T151425 CREATED:20250519T234525Z LAST-MODIFIED:20250528T234957Z UID:126080-1747699200-1747785599@www.a3veen.nl SUMMARY:#DrakeAwards2025 DESCRIPTION:The Drake Awards is a one-of-a-kind celebration at the SETI Institute. Together\, we explore one of humanity’s biggest questions—are we alone? \nThis special hybrid event brings together a vibrant community of scientists\, students\, industry leaders\, and space enthusiasts to celebrate groundbreaking discoveries and spark new ideas. Celebrates exemplary contributions to SETI or astrobiology through scientific research and space exploration. The award honors Frank Drake\, whose Drake Equation first identified the specific factors necessary for the emergence of life in the Universe and the evolution of technological civilizations. This honor is given at the discretion of the Board of Trustees of the SETI Institute\, based on nominations from its Science Advisory Board. The honoree is presented a cash award and trophy\, and is invited to describe their research at a public ceremony. The Award was initially presented to Frank Drake in 2001. \nThe SETI Institute announced two recipients for the 2025 Drake Award: Dr. David Deamer (University of California\, Santa Cruz) and Dr. John Baross (University of Washington\, Seattle). Deamer and Baross are known for their pioneering work in astrobiology\, focused on understanding the origins of life. However\, each approaches the question from a different perspective. Deamer\, a biomolecular engineer who focuses on membranes and RNA formation in shallow water environments\, is recognized for advancing new theories on the origins and processes of life in the Universe. Baross\, a microbiologist\, focuses on hydrothermal vents and deep-sea chemistry as the cradle of life and has pioneered research on extremophiles to decipher life’s origins on Earth and beyond. \nThe Carl Sagan Center Director’s Award is awarded to an outstanding SETI Institute scientist who has demonstrated outstanding achievement in their field. This award honors the impact of SETI Institute former Trustee\, Carl Sagan\, whose innovation\, invention\, leadership and collaboration in space science continues to inspire scientists and the public alike. The SETI Institute will recognize Dr. Joseph Twicken\, Senior Data Scientist at the SETI Institute\, with its 2025 Carl Sagan Center (CSC) Director’s Award. Now serving as the Lead Data Scientist in the TESS (Transiting Exoplanet Survey Satellite) Science Processing Center\, Twicken’s contributions to the Kepler Mission included designing\, implementing\, operating\, maintaining and documenting the mission’s Data Processing Pipeline. Kepler revolutionized exoplanet science\, discovering and confirming nearly 3\,000 exoplanets and fundamentally changing our understanding of planets beyond our solar system. \nThe SETI Institute\, with its partners\, particularly Berkeley SETI Research Center\, have created an endowment\, called SETI Forward Fund\, that will support and encourage the next generation of SETI scientists. SETI Forward will increase pathways for undergraduates interested in careers pursuing SETI research. Gabriella Rizzo and Pritvik Sinhadc will be officially honored at this Drake Awards ceremony in 2025 \nLinks:\nDrake Awards \nSETI Institute’s 2025 Drake Award Recognizes Origins Of Life Research URL:https://www.a3veen.nl/event/drakeawards2025/ CATEGORIES:Astronomie END:VEVENT BEGIN:VEVENT DTSTART;VALUE=DATE:20250527 DTEND;VALUE=DATE:20250528 DTSTAMP:20260613T151425 CREATED:20250527T090759Z LAST-MODIFIED:20250530T091033Z UID:126119-1748304000-1748390399@www.a3veen.nl SUMMARY:Very-wide-orbit planets from dynamical instabilities during the stellar birth cluster phase - publication DESCRIPTION:There could be a ninth planet in our Solar System after all and it’s not Pluto; instead\, it’s the theoretical Planet X\, also called Planet Nine\, a wide-orbit planet that would circle the Sun from far beyond Neptune and Pluto. \nPlanet X has been hypothesized for years\, but how such a planet could have appeared in the outer Solar System has long stumped scientists. The study in Nature Astronomy ‘Very-wide-orbit planets from dynamical instabilities during the stellar birth cluster phase’ reveals a novel theory\, however. The research suggests that wide-orbit planets (such as Planet X) arise in the early evolution of their planetary systems\, when these systems are still inside their stars’ crowded birth clusters. In these tight\, chaotic settings\, stars and their planets are fighting for space\, and sometimes planets are sent flying. \nLinks:\n‘Pinballs in a cosmic arcade’: New study suggests how wide-orbit planets form\, supporting existence of Planet Nine \nChaos in Our Solar System Could’ve Caused Planet X’s Theoretically Wide Orbit URL:https://www.a3veen.nl/event/very-wide-orbit-planets-from-dynamical-instabilities-during-the-stellar-birth-cluster-phase-publication/ CATEGORIES:Astronomie,Planeet9 END:VEVENT BEGIN:VEVENT DTSTART;VALUE=DATE:20250528 DTEND;VALUE=DATE:20250530 DTSTAMP:20260613T151425 CREATED:20250508T082409Z LAST-MODIFIED:20250528T123622Z UID:125278-1748390400-1748563199@www.a3veen.nl SUMMARY:2025 Humans to the Moon and Mars Summit DESCRIPTION:Explore Mars announced the launch of the 2025 Humans to the Moon and Mars Summit (H2M2). \nAs humanity advances toward a multi-planetary future\, H2M2 2025 is where industry leaders\, astronauts\, and policymakers come together to shape the next steps in lunar and Martian exploration. Taking place May 28-29\, 2025\, in Washington\, D.C.\, this summit offers exclusive insights\, cutting-edge research\, and critical policy discussions driving space innovation. From AI-driven mission planning to sustainable space infrastructure\, H2M2 2025 delivers unmatched networking and thought leadership for those defining the future of space. \n\n \nLinks:\n2025 Humans to the Moon and Mars Summit URL:https://www.a3veen.nl/event/2025-humans-to-the-moon-and-mars-summit/ LOCATION:Washington\, D.C.\, Washington\, D.C.\, Verenigde Staten CATEGORIES:Astronomie,Maan,Mars END:VEVENT BEGIN:VEVENT DTSTART;VALUE=DATE:20250601 DTEND;VALUE=DATE:20500701 DTSTAMP:20260613T151425 CREATED:20250212T044128Z LAST-MODIFIED:20260416T132733Z UID:120180-1748736000-2540246399@www.a3veen.nl SUMMARY:Vera C. Rubin Observatory DESCRIPTION:The Vera C. Rubin Observatory\, formerly known as the Large Synoptic Survey Telescope (LSST)\, is an astronomical observatory in Chile\, its main task will be carrying out a synoptic astronomical survey\, the Legacy Survey of Space and Time. \nThe word “synoptic” is derived from the Greek words σύν (syn ‘together’) and ὄψις (opsis ‘view’)\, and describes observations that give a broad view of a subject at a particular time. The observatory is located on the El Peñón peak of Cerro Pachón\, a 2\,682-meter-high mountain in Coquimbo Region\, in northern Chile\, alongside the existing Gemini South and Southern Astrophysical Research Telescopes. The LSST Base Facility is located about 100 kilometres away from the observatory by road\, in the city of La Serena. The observatory is named for Vera Rubin\, an American astronomer who pioneered discoveries about galactic rotation rates. The Rubin Observatory will house the Simonyi Survey Telescope\, a wide-field reflecting telescope with an 8.4-meter primary mirror that will photograph the entire available sky every few nights. The telescope uses a novel three-mirror design\, a variant of three-mirror anastigmat\, which allows a compact telescope to deliver sharp images over a very wide 3.5-degree-diameter field of view. Images will be recorded by a 3.2-gigapixel charge-coupled device imaging (CCD) camera\, the largest digital camera ever constructed. \nThe LSST was proposed in 2001\, and construction of the mirror began (with private funds) in 2007. LSST then became the top-ranked large ground-based project in the 2010 Astrophysics Decadal Survey\, and the project officially began construction on 1 August 2014\, when the United States National Science Foundation (NSF) authorized the FY2014 portion ($27.5 million) of its construction budget. Funding comes from the NSF\, the United States Department of Energy\, and private funding raised by the dedicated international non-profit organization\, the LSST Discovery Alliance. Operations are under the management of the Association of Universities for Research in Astronomy (AURA). The total construction cost is expected to be about $680 million. Site construction began on 14 April 2015 with the ceremonial laying of the first stone. The first on-sky observations with the engineering camera occurred on 24 October 2024\, while system first light images were released 23 June 2025. Full survey operations are planned to begin later in 2025\, due to COVID-related schedule delays. Rubin Observatory data is scheduled to become fully public after two years. \nLinks:\nVera C. Rubin Observatory \nThe Rewriting of a Pioneering Female Astronomer’s Legacy Shows How Far Trump’s DEI Purge Will Go \nFirst celestial image unveiled from revolutionary telescope \nEarly Data from NSF–DOE Vera C. Rubin Observatory Reveals Over 11\,000 New Asteroids URL:https://www.a3veen.nl/event/vera-c-rubin-observatory-expected-opening/ CATEGORIES:Astronomie END:VEVENT BEGIN:VEVENT DTSTART;VALUE=DATE:20250602 DTEND;VALUE=DATE:20250603 DTSTAMP:20260613T151425 CREATED:20250602T075527Z LAST-MODIFIED:20250602T075527Z UID:126195-1748822400-1748908799@www.a3veen.nl SUMMARY:Meteorenzwerm ω-Scorpiiden in juni 2025 DESCRIPTION:De meteorenzwerm ω-Scorpiiden bereikt op maandag 2 juni 2025\, rond 15:00\, 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 18°) aan de hemel. Het beste moment om ω-Scorpiiden waar te nemen is op 2 juni rond 02:15. De radiant van de zwerm staat dan ongeveer 16° boven de zuidzuidwestelijke horizon; niet erg gunstig. Er is dan bij ons ieder uur niet meer dan één meteoor zichtbaar van deze zwerm. In totaal zijn er\, door meteoren van andere zwermen en sporadische meteoren\, bij donkere en heldere hemel circa 2–6 “vallende sterren” per uur te zien. Op een goed donkere locatie zijn ongeveer 30% meer meteoren zichtbaar dan in dichtbevolkt gebied. De Maan is voor ongeveer 40% verlicht\, maar gaat om 02:17 onder. Rond 04:30 gaat het schemeren en om 05:24 komt de Zon op. \nLinks:\nMeteorenzwerm ω-Scorpiiden in juni 2025 URL:https://www.a3veen.nl/event/meteorenzwerm-%cf%89-scorpiiden-in-juni-2025/ CATEGORIES:Astronomie END:VEVENT BEGIN:VEVENT DTSTART;VALUE=DATE:20250608 DTEND;VALUE=DATE:20250613 DTSTAMP:20260613T151425 CREATED:20250609T124749Z LAST-MODIFIED:20250609T195634Z UID:126588-1749340800-1749772799@www.a3veen.nl SUMMARY:246th 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:\n246th AAS meeting URL:https://www.a3veen.nl/event/246th-aas-meeting/ CATEGORIES:Astronomie END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Amsterdam:20250619T200000 DTEND;TZID=Europe/Amsterdam:20250619T210000 DTSTAMP:20260613T151425 CREATED:20250619T090915Z LAST-MODIFIED:20250620T090932Z UID:127139-1750363200-1750366800@www.a3veen.nl SUMMARY:Babelsberger Sternennächte : Was uns Doppelsterne über die Rotation verraten | Dr. David Gruner (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). \nIn einem Doppelsternsystem kreisen zwei Sterne umeinander. Im Vortrag geht es jedoch nicht um die Umlaufbewegung der beiden Sterne umeinander\, sondern um ihre jeweils eigene Drehung um sich selbst. Die Eigenrotation verändert sich im Laufe des Lebens eines Sterns und kann zur Bestimmung des Sternalters genutzt werden. Die zwei Sterne eines Doppelsterns sind gemeinsam aus derselben Gaswolke entstanden und daher gleich alt. Der Vortrag beleuchtet\, wie diese Gleichaltrigkeit dazu genutzt werden kann\, den Zusammenhang zwischen Alter und Rotation von Sternen zu untersuchen. \nLink:\nBabelsberger Sternennächte URL:https://www.a3veen.nl/event/babelsberger-sternennachte-was-uns-doppelsterne-uber-die-rotation-verraten-dr-david-gruner-tv-webcast/ CATEGORIES:Astronomie END:VEVENT BEGIN:VEVENT DTSTART;VALUE=DATE:20250623 DTEND;VALUE=DATE:20250628 DTSTAMP:20260613T151425 CREATED:20250607T050929Z LAST-MODIFIED:20250607T152056Z UID:126524-1750636800-1751068799@www.a3veen.nl SUMMARY:European Astronomical Society Annual Meeting 2025 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-2025/ CATEGORIES:Astronomie END:VEVENT BEGIN:VEVENT DTSTART;VALUE=DATE:20250630 DTEND;VALUE=DATE:20250701 DTSTAMP:20260613T151425 CREATED:20250627T152928Z LAST-MODIFIED:20250731T093315Z UID:127400-1751241600-1751327999@www.a3veen.nl SUMMARY:#AsteroidDay / Dag van de Planetoïde 2025 - 10th anniversary DESCRIPTION:Asteroid Day (also known as International Asteroid Day) is an annual global event which is held on the anniversary of the Siberian Tunguska event that took place on June 30\, 1908\, the most harmful known asteroid–related event on Earth in recent history. \nThe United Nations has proclaimed it be observed globally on June 30 every year in its resolution. Asteroid Day 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. Asteroid Foundation celebrates 10th anniversary of Asteroid Day on 26\, 27 and 28 June 2025 in Luxembourg. This special programme will focus on blending art and science through exciting performances\, creative experiences\, and inspiring encounters. The events are open to the public\, hosted at Cercle Cité\, in Luxembourg and live-streamed on Asteroid Day’s digital platforms. Join the Astronomer For A Night Event\, Asteroid Day Space Lecture\, Asteroid Day Festival\, and Art & Science Performance.\n \nhttps://www.tumblr.com/nasa/787787203611852800/space-rocks-but-also-space-rocks\n\nLinks:\nAsteroid Day \nTorino scale \nAgenda 30-06-2023 – #AsteroidDay \nAsteroid Day TV \nSpecial asteroid edition of NASA Science Live \nOptimization and decision-making framework for multi-staged asteroid deflection campaigns under epistemic uncertainties \nLearn – What is an Asteroid? \nWhat Really Happened on The Day Dinosaurs Died – New Findings \nSkyfall – Tracking the asteroids that menace Earth \nAsteroid Day Space Lecture URL:https://www.a3veen.nl/event/asteroidday-dag-van-de-planetoide-2025-10th-anniversary/ CATEGORIES:Astronomie END:VEVENT BEGIN:VEVENT DTSTART;VALUE=DATE:20250701 DTEND;VALUE=DATE:20250702 DTSTAMP:20260613T151425 CREATED:20250701T132029Z LAST-MODIFIED:20251120T145357Z UID:127817-1751328000-1751414399@www.a3veen.nl SUMMARY:3I/ATLAS - ontdekking DESCRIPTION:3I/ATLAS – Nrco0e\, aka K Ly at Deep Random Survey\n3I/ATLAS\, ook wel bekend als C/2025 N1 (ATLAS) (voorheen A11pl3Z)\, is een op 1 juli 2025 ontdekt interstellair object\, de komeet is door het Asteroid Terrestrial-impact Last Alert System in Río Hurtado in Chili ontdekt. \nDe komeet bevond zich toen op een afstand van 4\,5 AE van de zon. Het is ook teruggevonden op foto’s van 22 mei 2025. Het object volgt een hyperbolische baan rond de zon. 3I/ATLAS is het derde bevestigde interstellaire object dat door het zonnestelsel passeert na 1I/’Oumuamua en 2I/Borisov. De kleinste afstand tot de zon (1\,356 AE; perihelium) zal bereikt worden op 29 oktober 2025. \nLinks:\nJPL Small-Body Database Lookup: C/2025 N1 (ATLAS) \nComet 3I/ATLAS \nDeep VLT image of 3I/ATLAS\, a new interstellar object \n3I/ATLAS: The IAC is monitoring closely the third interstellar object detected in the Solar System \nWater Detection in the Interstellar Object 3I/ATLAS \n3I/Atlas leuchtet plötzlich grün | 3I/ATLAS now shows blue-green coma \nESA’s Mars and Jupiter missions observe comet 3I/ATLAS \n3I/ATLAS Mars Perseverance Sol 1643: Right Navigation Camera (Navcam) \nView Interstellar Comet 3I/ATLAS Through NASA’s Multiple Lenses URL:https://www.a3veen.nl/event/3i-atlas-ontdekking/ CATEGORIES:Astronomie END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Amsterdam:20250717T200000 DTEND;TZID=Europe/Amsterdam:20250717T210000 DTSTAMP:20260613T151425 CREATED:20250717T073220Z LAST-MODIFIED:20250717T073615Z UID:128083-1752782400-1752786000@www.a3veen.nl SUMMARY:Babelsberger Sternennächte : ANDES\, der hochauflösende Spektrograph für das ELT | Dr. Michel Weber (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 Extremely Large Telescope (ELT) der ESO wird derzeit in Chile gebaut. ANDES ist der hochauflösende Spektrograph für dieses Großteleskop\, der hochpräzise und stabile Spektroskopie vom ultravioletten Licht (350 nm) bis ins nahe Infrarot (ca. 2 µm) ermöglichen wird. Das AIP in Potsdam ist für die Entwicklung und den Bau des optisch-ultravioletten Arms des ANDES-Spektrographen\, genannt ANDES-UBV\, zuständig. Dr. Michael Weber ist Leiter der Abteilung „Hochauflösende Spektroskopie und Polarimetrie“ am AIP. Er gibt in seinem Vortrag einen kurzen Abriss der Spektroskopie im Allgemeinen und der hochauflösenden Echelle-Spektroskopie im Speziellen und stellt das ANDES-Projekt vor. Dabei geht er auch darauf ein\, welche besonderen wissenschaftlichen Themen mit dem hochauflösenden Spektrographen untersucht werden können. \nLink:\nBabelsberger Sternennächte URL:https://www.a3veen.nl/event/babelsberger-sternennachte-andes-der-hochauflosende-spektrograph-fur-das-elt-dr-michel-weber-tv-webcast/ CATEGORIES:Astronomie END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Amsterdam:20250719T160000 DTEND;TZID=Europe/Amsterdam:20250719T235900 DTSTAMP:20260613T151425 CREATED:20250719T084303Z LAST-MODIFIED:20250721T075841Z UID:128141-1752940800-1752969540@www.a3veen.nl SUMMARY:STELLAR CERN’s summer science festival 2025 DESCRIPTION:On the 56th anniversary of the first human landing on the moon\, reach for the Stars at CERN’s summer science festival\, blending inspiring talks\, hands-on activities\, and live music for all ages. \nMeet astronauts\, Nobel Prize laureates and other world-class scientists. Discover with them how astrophysics and particle physics are shaping the future\, from exploring the Universe to transforming our daily lives in a surprising range of diverse fields including healthcare and climate modelling\, disaster relief\, transportation and global safety. \n