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#astronomy

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Galaxy bot<p>2MASXJ12201357+3056080: <a href="https://sga.legacysurvey.org/group/2MASXJ12201357+3056080" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">sga.legacysurvey.org/group/2MA</span><span class="invisible">SXJ12201357+3056080</span></a></p><p><a href="https://stefanbohacek.online/tags/space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>space</span></a> <a href="https://stefanbohacek.online/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a> <a href="https://stefanbohacek.online/tags/galaxy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>galaxy</span></a></p>
Steve Dustcircle 🌹<p><a href="https://mastodon.social/tags/JWST" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>JWST</span></a> Snaps Rare <a href="https://mastodon.social/tags/Cosmic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Cosmic</span></a> Phenomenon</p><p><a href="https://www.onlygoodnewsdaily.com/post/jwst-snaps-rare-cosmic-phenomenon" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">onlygoodnewsdaily.com/post/jws</span><span class="invisible">t-snaps-rare-cosmic-phenomenon</span></a> </p><p><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/cosmos" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>cosmos</span></a> <a href="https://mastodon.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a> <span class="h-card" translate="no"><a href="https://aspiechattr.me/@NASA" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>NASA</span></a></span></p>
Josh Universe :goldverify:<p><span>Hickson 44 in Leo<br><br></span><a href="https://apod.nasa.gov/apod/image/2504/ARP316_1024.jpg" rel="nofollow noopener noreferrer" target="_blank">https://apod.nasa.gov/apod/image/2504/ARP316_1024.jpg</a><span><br><br>Scanning the skies for galaxies, Canadian astronomer Paul Hickson and colleagues identified some 100 compact groups of galaxies, now appropriately called Hickson Compact Groups. The four prominent galaxies seen in this intriguing telescopic skyscape are one such group, Hickson 44. The galaxy group is about 100 million light-years distant, far beyond the spiky foreground Milky Way stars, toward the constellation Leo. The two spiral galaxies in the center of the image are edge-on NGC 3190 with its distinctive, warped dust lanes, and S-shaped NGC 3187. Along with the bright elliptical, NGC 3193 (above and left) they are also known as Arp 316. The spiral toward the lower right corner is NGC 3185, the 4th member of the Hickson group. Like other galaxies in Hickson groups, these show signs of distortion and enhanced star formation, evidence of a gravitational tug of war that will eventually result in galaxy mergers on a cosmic timescale. The merger process is now understood to be a normal part of the evolution of galaxies, including our own Milky Way. For scale, NGC 3190 is about 75,000 light-years across at the estimated distance of Hickson 44.<br><br>Attribution: Jiang Wu<br><br> </span><a href="https://lemmy.world/c/science" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@science@lemmy.world</a> <a href="https://beehaw.org/c/science" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@science@beehaw.org</a> <a href="https://beehaw.org/u/space" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@space@beehaw.org</a> <a href="https://lemmy.world/u/Space" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@space@lemmy.world</a> <a href="https://lemmy.ml/c/science" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@science@lemmy.ml</a> <a href="https://newsmast.community/@space" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@space@newsmast.community</a> <a href="https://lemmy.ml/c/space" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@space@lemmy.ml</a> <a href="https://science.social/tags/space" rel="nofollow noopener noreferrer" target="_blank">#space</a> <a href="https://science.social/tags/science" rel="nofollow noopener noreferrer" target="_blank">#science</a> <a href="https://science.social/tags/nasa" rel="nofollow noopener noreferrer" target="_blank">#nasa</a> <a href="https://science.social/tags/astronomy" rel="nofollow noopener noreferrer" target="_blank">#astronomy</a></p>
Bits of Pluto<p>A bit of Pluto <br><a href="https://mastodon.cesium.pw/tags/pluto" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>pluto</span></a> <a href="https://mastodon.cesium.pw/tags/nasa" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>nasa</span></a> <a href="https://mastodon.cesium.pw/tags/space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>space</span></a> <a href="https://mastodon.cesium.pw/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a> <a href="https://mastodon.cesium.pw/tags/science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>science</span></a> <a href="https://mastodon.cesium.pw/tags/plutopics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>plutopics</span></a></p>
David Blanchflower BSc<p>Mars, Pollux, and Castor from last night. 3 April 2025. <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/Astro" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astro</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/Astrophotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astrophotography</span></a></p>
Waffelhard<p><span class="h-card" translate="no"><a href="https://mastodon.social/@flwwhtrbt" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>flwwhtrbt</span></a></span> Wow! 🤩 I knew <a href="https://f.reun.de/tags/SuperTuxKart" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SuperTuxKart</span></a>, like an early version, but I didn't know it has become such a <a href="https://f.reun.de/tags/game" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>game</span></a>! 🤯 Just saw the trailer and obv. you can race inside <a href="https://f.reun.de/tags/Arecibo" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Arecibo</span></a> Observatory! 🥰 So great, this marvelous technical achievement is remembered there! Am installing right now! 🥳 <a href="https://f.reun.de/tags/linux" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>linux</span></a> <a href="https://f.reun.de/tags/gaming" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>gaming</span></a> <a href="https://f.reun.de/tags/LinuxGaming" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>LinuxGaming</span></a> <a href="https://f.reun.de/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a></p>
Astroland 🔭<p>Amateur Astronomie foto van de dag: Shadows and Peaks Along Alpine Valley. Foto info: <a href="https://www.aapod2.com" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="">aapod2.com</span><span class="invisible"></span></a> <a href="https://mastodon.social/tags/astronomie" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomie</span></a> <a href="https://mastodon.social/tags/sterrenkunde" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>sterrenkunde</span></a> <a href="https://mastodon.social/tags/fotografie" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>fotografie</span></a> <a href="https://mastodon.social/tags/sterrenkijken" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>sterrenkijken</span></a> <a href="https://mastodon.social/tags/aapod" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>aapod</span></a> <a href="https://mastodon.social/tags/heelal" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>heelal</span></a> <a href="https://mastodon.social/tags/universum" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>universum</span></a> <a href="https://mastodon.social/tags/sterren" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>sterren</span></a> <a href="https://mastodon.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a></p>
franco_vazza<p>It's the time of the year in which I challenge my students of <a href="https://mastodon.social/tags/physics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>physics</span></a> in engineering in producing a "tomato battery", i.e. to reproduce on stage the basic functioning principle of a galvanic cell: a pair of suitable metals, an acid solution, and some connecting wires.</p><p>"one tomato" battery is not enough to generate the 1.5V tension needed for the small digital clock, so they have to realise a serie of two tomato batteries is needed.</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/science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>science</span></a></p>
IOTA European Section<p>A new paper by J.M. Gómez-Limón et al. compares results from an observation of a stellar occultation by trans-Neptunian object (470316) 2007 OC10 on 2022 Aug 22 with thermal data by the "TNOs are Cool" survey.</p><p><a href="https://arxiv.org/abs/2504.02457" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">arxiv.org/abs/2504.02457</span><span class="invisible"></span></a></p><p><a href="https://mastodon.online/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a> <a href="https://mastodon.online/tags/asteroid" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>asteroid</span></a> <a href="https://mastodon.online/tags/occultation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>occultation</span></a> <a href="https://mastodon.online/tags/citizenscience" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>citizenscience</span></a></p>
David Blanchflower BSc<p>This week's sky at a glance, April 4-12. Very useful Sky &amp; Telescope observing guide by Alan MacRobert. <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/Astro" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astro</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/Astrophotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astrophotography</span></a> <a href="https://skyandtelescope.org/astronomy-news/this-weeks-sky-at-a-glance-april-4-12/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">skyandtelescope.org/astronomy-</span><span class="invisible">news/this-weeks-sky-at-a-glance-april-4-12/</span></a></p>
ESO<p>When massive stars die, they go out with a bang 💥</p><p>These are known as supernova explosions, and what remains are breathtaking structures like the ones you'll discover in the video below 👇</p><p><a href="https://www.youtube.com/watch?v=HDTJzkm_Z08" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">youtube.com/watch?v=HDTJzkm_Z0</span><span class="invisible">8</span></a></p><p><a href="https://astrodon.social/tags/astrodon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astrodon</span></a> <a href="https://astrodon.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a> <a href="https://astrodon.social/tags/astrophysics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astrophysics</span></a> <a href="https://astrodon.social/tags/space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>space</span></a> <a href="https://astrodon.social/tags/science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>science</span></a></p>
Astronomer, Reinvented<p><a href="https://universeodon.com/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a> At 1045 GMT, the eclipse reached its greatest coverage, at least according to my photos. I used my Mak and DSLR at 1.54m focal length, ISO 100 and 1/500 second exposure.<br><a href="https://www.flickr.com/photos/philippughastronomer/54418633035/in/dateposted-public/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">flickr.com/photos/philippughas</span><span class="invisible">tronomer/54418633035/in/dateposted-public/</span></a></p>
Bits of Pluto<p>A bit of Pluto <br><a href="https://mastodon.cesium.pw/tags/pluto" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>pluto</span></a> <a href="https://mastodon.cesium.pw/tags/nasa" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>nasa</span></a> <a href="https://mastodon.cesium.pw/tags/space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>space</span></a> <a href="https://mastodon.cesium.pw/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a> <a href="https://mastodon.cesium.pw/tags/science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>science</span></a> <a href="https://mastodon.cesium.pw/tags/plutopics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>plutopics</span></a></p>
AstronomieNL<p>Sterrenkundigen ontdekken eindelijk dubbele witte dwerg die gaat ontploffen tot supernova.</p><p><a href="https://www.astronomie.nl/nieuws/sterrenkundigen-ontdekken-eindelijk-dubbele-witte-dwerg-die-gaat-ontploffen-tot-supernova-4479" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">astronomie.nl/nieuws/sterrenku</span><span class="invisible">ndigen-ontdekken-eindelijk-dubbele-witte-dwerg-die-gaat-ontploffen-tot-supernova-4479</span></a> </p><p>cc:<br><span class="h-card" translate="no"><a href="https://mastodon.online/@UniversityofAmsterdam" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>UniversityofAmsterdam</span></a></span><br><span class="h-card" translate="no"><a href="https://mastodon.social/@Radboud_uni" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>Radboud_uni</span></a></span><br><span class="h-card" translate="no"><a href="https://mastodon.nl/@universiteitleiden" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>universiteitleiden</span></a></span></p><p><a href="https://mastodon.nl/tags/astronomie" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomie</span></a> <a href="https://mastodon.nl/tags/astrodon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astrodon</span></a> <a href="https://mastodon.nl/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a></p>
Khurram Wadee ✅<p><a href="https://mastodon.org.uk/tags/Hickson44" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Hickson44</span></a> in <a href="https://mastodon.org.uk/tags/Leo" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Leo</span></a><br><a href="https://mastodon.org.uk/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astronomy</span></a> <a href="https://mastodon.org.uk/tags/Picture" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Picture</span></a> of the Day</p><p><a href="https://apod.nasa.gov/apod/ap250404.html" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">apod.nasa.gov/apod/ap250404.ht</span><span class="invisible">ml</span></a></p><p><a href="https://mastodon.org.uk/tags/APOD" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>APOD</span></a></p>
Astronomy Picture of the Day<p>APOD from 2025-04-04</p><p>Hickson 44 in Leo</p><p>Canadian astronomer Paul Hickson identified 100 compact <a href="https://mastodon.bot/tags/galaxy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>galaxy</span></a> groups, one being Hickson 44 in Leo, 100 million light-years away. This group includes spirals NGC 3190 and NGC 3187, elliptical NGC 3193, and spiral NGC 3185. Their interactions hint at future mergers, a common aspect of galactic evolution.</p><p>HD image at <a href="https://apod.nasa.gov/apod/ap250404.html#space" rel="nofollow noopener noreferrer" target="_blank"><span class="invisible">https://</span><span class="ellipsis">apod.nasa.gov/apod/ap250404.ht</span><span class="invisible">ml#space</span></a> <a href="https://mastodon.bot/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a></p>
Spaceflight 🚀<p>“We expect more possible impactors 💥 to be found 🔭 in coming years as more sensitive <a href="https://spacey.space/tags/asteroid" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>asteroid</span></a> ☄️ search programs begin operation" <a href="https://www.forbes.com/sites/amandakooser/2025/04/02/webb-measures-size-of-that-scary-not-scary-city-killer-asteroid" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">forbes.com/sites/amandakooser/</span><span class="invisible">2025/04/02/webb-measures-size-of-that-scary-not-scary-city-killer-asteroid</span></a></p><p><a href="https://spacey.space/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astronomy</span></a> <a href="https://spacey.space/tags/AsteroidThreat" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>AsteroidThreat</span></a></p>
Denys Moreau<p>Hier j'ai fabriqué l'Oracle des Destructeurs de monde. Cet oracle divinatoire de 32 cartes a pour arcanes 32 astéroïdes géocroiseurs capables d'oblitérer toute vie sur Terre.</p><p>A utiliser avec précaution. Il est en vente sur ma boutique. <a href="https://denysmoreau.com/produit/loracle-des-destructeurs-de-mondes/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">denysmoreau.com/produit/loracl</span><span class="invisible">e-des-destructeurs-de-mondes/</span></a></p><p><a href="https://mastodon.social/tags/oracle" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>oracle</span></a> <a href="https://mastodon.social/tags/astronomie" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomie</span></a> <a href="https://mastodon.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a></p>
Galaxy bot<p>PGC739729: <a href="https://sga.legacysurvey.org/group/PGC739729" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">sga.legacysurvey.org/group/PGC</span><span class="invisible">739729</span></a></p><p><a href="https://stefanbohacek.online/tags/space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>space</span></a> <a href="https://stefanbohacek.online/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a> <a href="https://stefanbohacek.online/tags/galaxy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>galaxy</span></a></p>
Bits of Pluto<p>A bit of Pluto <br><a href="https://mastodon.cesium.pw/tags/pluto" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>pluto</span></a> <a href="https://mastodon.cesium.pw/tags/nasa" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>nasa</span></a> <a href="https://mastodon.cesium.pw/tags/space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>space</span></a> <a href="https://mastodon.cesium.pw/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a> <a href="https://mastodon.cesium.pw/tags/science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>science</span></a> <a href="https://mastodon.cesium.pw/tags/plutopics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>plutopics</span></a></p>
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