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#astronomy

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Westport Observatory<p>🌞 STRONG GEOMAGNETIC STORMS AHEAD! 🌌</p><p>Solar activity has spiked with multiple X-class flares and at least three CMEs heading for Earth. Impacts are expected Nov. 6–7, possibly causing G3–G4 geomagnetic storms and auroras visible across the northern U.S. and Europe.</p><p>Watch for updates @ Spaceweather.com 🌈✨</p><p><a href="https://vmst.io/tags/Aurora" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Aurora</span></a> <a href="https://vmst.io/tags/SolarStorm" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SolarStorm</span></a> <a href="https://vmst.io/tags/SpaceWeather" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceWeather</span></a> <a href="https://vmst.io/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astronomy</span></a> <a href="https://vmst.io/tags/WestportObservatory" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>WestportObservatory</span></a></p>
Eve :verified:<p><a href="https://swiss.social/tags/knowledge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>knowledge</span></a> <a href="https://swiss.social/tags/wissen" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>wissen</span></a> <a href="https://swiss.social/tags/wissenschaft" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>wissenschaft</span></a> <a href="https://swiss.social/tags/science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>science</span></a> <a href="https://swiss.social/tags/archaeology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>archaeology</span></a> <a href="https://swiss.social/tags/archaologie" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>archaologie</span></a> <a href="https://swiss.social/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astronomy</span></a> <a href="https://swiss.social/tags/astronomie" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomie</span></a> </p><p>Sonnensystem<br>Raumsonde nimmt 3I/ATLAS ins Visier<br>Glücklicher Zufall bietet der Jupitersonde JUICE beste Sicht auf den interstellaren Kometen 🤓 </p><p><a href="https://www.scinexx.de/news/kosmos/raumsonde-nimmt-3i-atlas-ins-visier/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">scinexx.de/news/kosmos/raumson</span><span class="invisible">de-nimmt-3i-atlas-ins-visier/</span></a></p>
Thomas Weibel<p><a href="https://swiss.social/tags/Fullmoon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Fullmoon</span></a>, says <a href="https://swiss.social/tags/Meton" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Meton</span></a>, the ancient Greek.</p><p><a href="https://www.thomasweibel.ch/meton/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="">thomasweibel.ch/meton/</span><span class="invisible"></span></a> </p><p><a href="https://swiss.social/tags/moon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>moon</span></a> <a href="https://swiss.social/tags/history" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>history</span></a> <a href="https://swiss.social/tags/archaeology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>archaeology</span></a> <a href="https://swiss.social/tags/antiquity" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>antiquity</span></a> <a href="https://swiss.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a> <a href="https://swiss.social/tags/mathematics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>mathematics</span></a> <a href="https://swiss.social/tags/physics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>physics</span></a> <a href="https://swiss.social/tags/astrophysics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astrophysics</span></a> <a href="https://swiss.social/tags/mechanics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>mechanics</span></a> <a href="https://swiss.social/tags/simulation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>simulation</span></a> <a href="https://swiss.social/tags/opendata" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>opendata</span></a> <a href="https://swiss.social/tags/openglam" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>openglam</span></a> <a href="https://swiss.social/tags/openeducation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>openeducation</span></a> <a href="https://swiss.social/tags/digitalhumanities" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>digitalhumanities</span></a> <a href="https://swiss.social/tags/webdev" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>webdev</span></a> <a href="https://swiss.social/tags/engineering" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>engineering</span></a> <a href="https://swiss.social/tags/html" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>html</span></a> <a href="https://swiss.social/tags/css" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>css</span></a> <a href="https://swiss.social/tags/javascript" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>javascript</span></a> <a href="https://swiss.social/tags/js" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>js</span></a></p>
Flipboard Science Desk<p>Scientists spot the brightest flare yet from a supermassive black hole.</p><p><span class="h-card" translate="no"><a href="https://flipboard.com/@AssociatedPress" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>AssociatedPress</span></a></span> reports: "The flare came from a supermassive black hole that’s 10 billion light years away, making the flash the most distant one observed so far."</p><p><a href="https://flip.it/YM6nBS" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">flip.it/YM6nBS</span><span class="invisible"></span></a></p><p><a href="https://flipboard.social/tags/Space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Space</span></a> <a href="https://flipboard.social/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astronomy</span></a> <a href="https://flipboard.social/tags/Science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Science</span></a> <a href="https://flipboard.social/tags/BlackHole" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>BlackHole</span></a></p>
Ian Robinson<p>This PBS Space Time video about the motion of the Earth and Solar System with respect to various reference frames is superb. It’s from two years ago, but worth your time. </p><p>20-minute video: <a href="https://youtu.be/1lPJ5SX5p08" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">youtu.be/1lPJ5SX5p08</span><span class="invisible"></span></a></p><p><a href="https://mastodon.social/tags/Science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Science</span></a> <a href="https://mastodon.social/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astronomy</span></a> <a href="https://mastodon.social/tags/CelestialMechanics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>CelestialMechanics</span></a></p>
grobi<p>2025 November 4</p><p>Comet Lemmon Beyond Lomnický Peak<br> * Image Credit &amp; Copyright: Robert Barsa<br><a href="http://astrofotografia.sk/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">http://</span><span class="">astrofotografia.sk/</span><span class="invisible"></span></a></p><p>Explanation: <br>Comet Lemmon has been putting on a show for cameras around the globe. Passing nearest to Earth in late October, the photogenic comet C/2025 A6 (Lemmon) sprouted two long and picturesque tails: a blue ion tail and a white dust tail. The ion tail is pushed away from the coma by the ever-present but ever-changing solar wind, at one point extending over 20 times the diameter of the full Moon -- as captured in this long-duration exposure. The shorter and wider dust tail is pushed away from the coma and shines by reflecting sunlight. The featured picture, captured two weeks ago, framed the comet behind Lomnický Peak of the High Tatra Mountains, home to the Slovakian Lomnický Stit Observatory. Comet Lemmon is now fading as it heads away from planet Earth. The huge shedding snowball will round the Sun later this week.<br><a href="https://www.instagram.com/p/DQUSyhYAp2q/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="">instagram.com/p/DQUSyhYAp2q/</span><span class="invisible"></span></a><br><a href="https://en.wikipedia.org/wiki/C/2025_A6_(Lemmon)" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">en.wikipedia.org/wiki/C/2025_A</span><span class="invisible">6_(Lemmon)</span></a><br><a href="https://astronomy.swin.edu.au/cosmos/C/cometary+dust+tail" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">astronomy.swin.edu.au/cosmos/C</span><span class="invisible">/cometary+dust+tail</span></a><br><a href="https://astro4edu.org/resources/glossary/term/61/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">astro4edu.org/resources/glossa</span><span class="invisible">ry/term/61/</span></a><br><a href="https://spaceplace.nasa.gov/comets/en/anatomy-of-a-comet.en.jpg" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">spaceplace.nasa.gov/comets/en/</span><span class="invisible">anatomy-of-a-comet.en.jpg</span></a><br><a href="https://science.nasa.gov/sun/what-is-the-solar-wind/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">science.nasa.gov/sun/what-is-t</span><span class="invisible">he-solar-wind/</span></a><br><a href="https://theskylive.com/c2025a6-info" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">theskylive.com/c2025a6-info</span><span class="invisible"></span></a><br><a href="https://web.astro.sk/en/research/observatories/lomnicky-stit-observatory/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">web.astro.sk/en/research/obser</span><span class="invisible">vatories/lomnicky-stit-observatory/</span></a><br><a href="https://www.youtube.com/watch?v=Sh9uHKMYWM8" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="">youtube.com/watch?v=Sh9uHKMYWM8</span><span class="invisible"></span></a></p><p><a href="https://apod.nasa.gov/apod/ap251104.html" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">apod.nasa.gov/apod/ap251104.ht</span><span class="invisible">ml</span></a></p><p><a href="https://defcon.social/tags/space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>space</span></a> <a href="https://defcon.social/tags/comets" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>comets</span></a> <a href="https://defcon.social/tags/astrophotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astrophotography</span></a> <a href="https://defcon.social/tags/photography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>photography</span></a> <a href="https://defcon.social/tags/science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>science</span></a> <a href="https://defcon.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a> <a href="https://defcon.social/tags/nature" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>nature</span></a> <a href="https://defcon.social/tags/NASA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>NASA</span></a> <a href="https://defcon.social/tags/ESA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ESA</span></a> <a href="https://defcon.social/tags/education" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>education</span></a> <a href="https://defcon.social/tags/apod" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>apod</span></a></p>
Rudy Gardea<p>Monday night moon</p><p><a href="https://mastodon.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a> <a href="https://mastodon.social/tags/sonyalpha" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>sonyalpha</span></a> <a href="https://mastodon.social/tags/moon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>moon</span></a> <a href="https://mastodon.social/tags/space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>space</span></a></p>
AllanICarswellObservatoryTune in tonight for a new episode of York Universe LIVE, with former Astronomer in Residence John Wilmot! Join us as we discuss fascinating astronomy history and the latest space news.<br> If weather permits, we’ll have Online Public Viewing where we show you live views from our 1m telescope!<br> Date: Monday, November 3, 2025<br> Time: 9:00 – 10:00 PM ET<br> Location: www.youtube.com/@YorkUObservatory/live<br> <br> <a href="https://pixelfed.social/discover/tags/SpaceExploration?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#SpaceExploration</a> <a href="https://pixelfed.social/discover/tags/Space?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#Space</a> <a href="https://pixelfed.social/discover/tags/Astronomer?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#Astronomer</a> <a href="https://pixelfed.social/discover/tags/Astronomy?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#Astronomy</a> <a href="https://pixelfed.social/discover/tags/Radio?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#Radio</a> <a href="https://pixelfed.social/discover/tags/Show?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#Show</a> <a href="https://pixelfed.social/discover/tags/Podcast?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#Podcast</a> <a href="https://pixelfed.social/discover/tags/YorkU?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#YorkU</a> <a href="https://pixelfed.social/discover/tags/Observatory?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#Observatory</a> <a href="https://pixelfed.social/discover/tags/AllanICarswellObservatory?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#AllanICarswellObservatory</a> <a href="https://pixelfed.social/discover/tags/Stargazing?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#Stargazing</a> <a href="https://pixelfed.social/discover/tags/YorkUniverse?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#YorkUniverse</a> <a href="https://pixelfed.social/discover/tags/Telescope?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#Telescope</a> <a href="https://pixelfed.social/discover/tags/Planets?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#Planets</a> <a href="https://pixelfed.social/discover/tags/Stars?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#Stars</a> <a href="https://pixelfed.social/discover/tags/Science?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#Science</a> <a href="https://pixelfed.social/discover/tags/Physics?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#Physics</a> <a href="https://pixelfed.social/discover/tags/Toronto?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#Toronto</a> <a href="https://pixelfed.social/discover/tags/YorkUObservatory?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#YorkUObservatory</a> <a href="https://pixelfed.social/discover/tags/AICO?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#AICO</a>
Lisa Marie ☮️&💜<p>Keeping up with the latest <a href="https://m.ai6yr.org/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a> news in the stargazing app <a href="https://m.ai6yr.org/tags/StarWalk" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>StarWalk</span></a>. <a href="https://m.ai6yr.org/tags/SkyTonight" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SkyTonight</span></a> <a href="https://m.ai6yr.org/tags/NovemberSky" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>NovemberSky</span></a> <a href="https://m.ai6yr.org/tags/NovemberPlanets" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>NovemberPlanets</span></a> <a href="https://m.ai6yr.org/tags/StarWalk" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>StarWalk</span></a> <a href="https://m.ai6yr.org/tags/NightSky" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>NightSky</span></a> <a href="https://starwalk.space/ay/en/nov-sky" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">starwalk.space/ay/en/nov-sky</span><span class="invisible"></span></a></p>
Flipboard Science Desk<p>How to spot November’s supermoon, the closest of the year.</p><p>From <span class="h-card" translate="no"><a href="https://flipboard.com/@AssociatedPress" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>AssociatedPress</span></a></span>: "No special equipment is needed to view the supermoon if clear skies permit. But the change in the moon’s size can be tough to discern with the naked eye."</p><p><a href="https://flip.it/9ev96F" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">flip.it/9ev96F</span><span class="invisible"></span></a></p><p><a href="https://flipboard.social/tags/Moon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Moon</span></a> <a href="https://flipboard.social/tags/Space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Space</span></a> <a href="https://flipboard.social/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astronomy</span></a> <a href="https://flipboard.social/tags/Supermoon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Supermoon</span></a> <a href="https://flipboard.social/tags/Science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Science</span></a></p>
brettezeleliquide<p>la double rotation de la terre</p><p>Hidekazu Shitagami, Osaka, Japan<br><a href="https://h4.io/tags/science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>science</span></a> <a href="https://h4.io/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a> <a href="https://h4.io/tags/geometry" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>geometry</span></a> <a href="https://h4.io/tags/Japan" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Japan</span></a> <a href="https://h4.io/tags/photography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>photography</span></a></p>
ESO<p>Open Sesame!</p><p>The doors of our Extremely Large Telescope have moved for the first time. This was no small feat, as each door will weigh 650 tonnes once completed.</p><p>The ELT dome and its doors will guard the telescope from the harsh conditions of the Atacama Desert in <a href="https://mastodon.social/tags/Chile" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Chile</span></a>.</p><p><a href="https://www.eso.org/public/videos/potw2544a/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">eso.org/public/videos/potw2544</span><span class="invisible">a/</span></a></p><p>📹 ESO/ACe</p><p><a href="https://mastodon.social/tags/astrodon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astrodon</span></a> <a href="https://mastodon.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a> <a href="https://mastodon.social/tags/astrophysics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astrophysics</span></a> <a href="https://mastodon.social/tags/space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>space</span></a> <a href="https://mastodon.social/tags/science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>science</span></a> <a href="https://mastodon.social/tags/engineering" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>engineering</span></a></p>
Thomas Weibel<p>After decades of research, a seemingly unremarkable find retrieved from a Roman shipwreck proved to be a sensational scientific discovery, proving that the ancient Greeks were capable of making mechanical models of the cosmos. The Antikythera Mechanism is the world‘s first known analog computer. </p><p><a href="https://blog.nationalmuseum.ch/en/2023/11/an-ancient-greek-computer/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">blog.nationalmuseum.ch/en/2023</span><span class="invisible">/11/an-ancient-greek-computer/</span></a> </p><p>My virtual replica: </p><p><a href="https://www.thomasweibel.ch/anticythera2/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="">thomasweibel.ch/anticythera2/</span><span class="invisible"></span></a> </p><p><a href="https://swiss.social/tags/history" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>history</span></a> <a href="https://swiss.social/tags/sciencehistory" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>sciencehistory</span></a> <a href="https://swiss.social/tags/antiquity" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>antiquity</span></a> <a href="https://swiss.social/tags/archaeology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>archaeology</span></a> <a href="https://swiss.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a> <a href="https://swiss.social/tags/digitalhumanities" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>digitalhumanities</span></a> <a href="https://swiss.social/tags/mathematics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>mathematics</span></a> <a href="https://swiss.social/tags/physics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>physics</span></a> <a href="https://swiss.social/tags/astrophysics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astrophysics</span></a></p>
grobi<p>2025 November 3</p><p>A Double Helix Lunar Eclipse<br> * Image Credit &amp; Copyright: Chunlin Liu</p><p>Explanation: <br>The image was timed to capture a total lunar eclipse -- but it came with quite a twist. First, the eclipse: the fully Earth-shadowed Moon is visible as the orange orb near the top. The eclipsed Moon's orange color is caused by a slight amount of red light scattered first by Earth's atmosphere, adding a color like a setting Sun. Now, the twist: one of the apparent double helix bands is the Milky Way, the central disk of our home galaxy. The second band is zodiacal light, sunlight scattered by dust in our Solar System. The reason they cross is because the plane where dust orbits our Sun is tilted relative to the plane where stars orbit our Galaxy. This well-known tilt is shown dramatically in the featured wide-angle Mercator-projected picture, spanning from horizon to horizon, captured in early September from Mingantu Observing Station in Inner Mongolia, China. <br><a href="https://www.timeanddate.com/eclipse/lunar/2025-september-7" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">timeanddate.com/eclipse/lunar/</span><span class="invisible">2025-september-7</span></a><br><a href="https://en.wikipedia.org/wiki/Ecliptic" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">en.wikipedia.org/wiki/Ecliptic</span><span class="invisible"></span></a><br><a href="https://science.nasa.gov/moon/eclipses/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">science.nasa.gov/moon/eclipses/</span><span class="invisible"></span></a><br><a href="https://science.nasa.gov/earth/earth-atmosphere/earths-atmosphere-a-multi-layered-cake/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">science.nasa.gov/earth/earth-a</span><span class="invisible">tmosphere/earths-atmosphere-a-multi-layered-cake/</span></a><br><a href="https://science.nasa.gov/resource/the-milky-way-galaxy/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">science.nasa.gov/resource/the-</span><span class="invisible">milky-way-galaxy/</span></a><br><a href="https://en.wikipedia.org/wiki/Galactic_plane" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">en.wikipedia.org/wiki/Galactic</span><span class="invisible">_plane</span></a><br><a href="https://en.wikipedia.org/wiki/Ecliptic" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">en.wikipedia.org/wiki/Ecliptic</span><span class="invisible"></span></a><br><a href="https://en.wikipedia.org/wiki/Mercator_projection" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">en.wikipedia.org/wiki/Mercator</span><span class="invisible">_projection</span></a></p><p><a href="https://english.nao.cas.cn/Research2015/Research_Divisions2015/solar/202012/t20201217_256816.html" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">english.nao.cas.cn/Research201</span><span class="invisible">5/Research_Divisions2015/solar/202012/t20201217_256816.html</span></a></p><p><a href="https://apod.nasa.gov/apod/ap251103.html" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">apod.nasa.gov/apod/ap251103.ht</span><span class="invisible">ml</span></a></p><p><a href="https://defcon.social/tags/space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>space</span></a> <a href="https://defcon.social/tags/galaxy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>galaxy</span></a> <a href="https://defcon.social/tags/milkyway" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>milkyway</span></a> <a href="https://defcon.social/tags/astrophotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astrophotography</span></a> <a href="https://defcon.social/tags/photography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>photography</span></a> <a href="https://defcon.social/tags/science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>science</span></a> <a href="https://defcon.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a> <a href="https://defcon.social/tags/nature" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>nature</span></a> <a href="https://defcon.social/tags/NASA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>NASA</span></a> <a href="https://defcon.social/tags/apod" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>apod</span></a></p>
Rudy Gardea<p>Sunday night Moon</p><p><a href="https://mastodon.social/tags/sonyalpha" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>sonyalpha</span></a> #<a href="https://mastodon.social/tags/photography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>photography</span></a> <a href="https://mastodon.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a> <a href="https://mastodon.social/tags/moon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>moon</span></a></p>
Oskar Contreras<p>Good Saturday evening. Set the s50 outside. Need to figure out what to see tonight. Here as a shot of the <a href="https://mastodon.social/tags/moon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>moon</span></a>. <a href="https://mastodon.social/tags/seestar" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>seestar</span></a> <a href="https://mastodon.social/tags/S50" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>S50</span></a> <a href="https://mastodon.social/tags/space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>space</span></a> <a href="https://mastodon.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a> <a href="https://mastodon.social/tags/amateur" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>amateur</span></a></p>
Dobviews<p>82.3% Waxing Gibbeous Moon</p><p>A lovely view between the clouds tonight.</p><p><a href="https://mstdn.social/tags/moon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>moon</span></a><br><a href="https://mstdn.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a><br><a href="https://mstdn.social/tags/gibbeousmoon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>gibbeousmoon</span></a><br><a href="https://mstdn.social/tags/lunarpics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>lunarpics</span></a><br><a href="https://mstdn.social/tags/photography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>photography</span></a><br><a href="https://mstdn.social/tags/astrophotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astrophotography</span></a><br><a href="https://mstdn.social/tags/smartphoneastronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>smartphoneastronomy</span></a></p>
Thomas<p>Half moon from last night...<br><a href="https://mas.to/tags/photography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>photography</span></a> <a href="https://mas.to/tags/TheMoon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>TheMoon</span></a> <a href="https://mas.to/tags/HalfMoon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HalfMoon</span></a> <a href="https://mas.to/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astronomy</span></a></p>
Reymond Aguinaldo<p>Learn more about the fascinating moons of our solar system—and the secrets they hold: <a href="https://science.nasa.gov/solar-system/moons/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">science.nasa.gov/solar-system/</span><span class="invisible">moons/</span></a></p><p><a href="https://mastodon.social/tags/Moons" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Moons</span></a> <a href="https://mastodon.social/tags/Moon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Moon</span></a> <a href="https://mastodon.social/tags/SolarSystem" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SolarSystem</span></a> <a href="https://mastodon.social/tags/Science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Science</span></a> <a href="https://mastodon.social/tags/Space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Space</span></a> <a href="https://mastodon.social/tags/Astrodon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astrodon</span></a> <a href="https://mastodon.social/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astronomy</span></a> <a href="https://mastodon.social/tags/Nature" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Nature</span></a> <a href="https://mastodon.social/tags/Physics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Physics</span></a> <a href="https://mastodon.social/tags/Astrophysics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astrophysics</span></a> <a href="https://mastodon.social/tags/NASA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>NASA</span></a></p>
Reymond Aguinaldo<p>There are 891 confirmed moons in our solar system (so far). As telescopes become more powerful and space missions venture deeper, we’ll likely find more hidden worlds—small, icy, and mysterious—circling the distant giants. The story of our solar system’s moons is still unfolding.</p><p><a href="https://mastodon.social/tags/Moons" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Moons</span></a> <a href="https://mastodon.social/tags/Moon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Moon</span></a> <a href="https://mastodon.social/tags/SolarSystem" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SolarSystem</span></a> <a href="https://mastodon.social/tags/Science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Science</span></a> <a href="https://mastodon.social/tags/Space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Space</span></a> <a href="https://mastodon.social/tags/Astrodon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astrodon</span></a> <a href="https://mastodon.social/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astronomy</span></a> <a href="https://mastodon.social/tags/Nature" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Nature</span></a> <a href="https://mastodon.social/tags/Physics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Physics</span></a> <a href="https://mastodon.social/tags/Astrophysics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astrophysics</span></a> <a href="https://mastodon.social/tags/NASA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>NASA</span></a></p>
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