ohai.social is one of the many independent Mastodon servers you can use to participate in the fediverse.
A cozy, fast and secure Mastodon server where everyone is welcome. Run by the folks at ohai.is.

Administered by:

Server stats:

1.8K
active users

#astronomy

344 posts238 participants29 posts today
MalloryThe Sunflower Galaxy (M63)<br> <br> <a href="https://pixelfed.social/discover/tags/astronomy?src=hash" class="u-url hashtag" rel="nofollow noopener" target="_blank">#astronomy</a> <a href="https://pixelfed.social/discover/tags/astrophotography?src=hash" class="u-url hashtag" rel="nofollow noopener" target="_blank">#astrophotography</a>
Dr. John Barentine FRAS<p>"We detected broadband emissions from <a href="https://astrodon.social/tags/Starlink" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Starlink</span></a> <a href="https://astrodon.social/tags/satellites" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>satellites</span></a>, predominantly between 54-66 MHz, with flux densities exceeding 500 Jy. These signals are highly polarized and unlikely to originate from ground-based RFI or reflected astronomical sources. Instead, they are likely intrinsic to the satellites, with distinct differences in emission properties observed between satellite generations."</p><p><a href="https://arxiv.org/abs/2504.10032" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">arxiv.org/abs/2504.10032</span><span class="invisible"></span></a></p><p><a href="https://astrodon.social/tags/Astronomy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Astronomy</span></a> <a href="https://astrodon.social/tags/RadioAstronomy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>RadioAstronomy</span></a> <a href="https://astrodon.social/tags/RFI" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>RFI</span></a> <a href="https://astrodon.social/tags/Space" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Space</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" target="_blank">#<span>pluto</span></a> <a href="https://mastodon.cesium.pw/tags/nasa" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>nasa</span></a> <a href="https://mastodon.cesium.pw/tags/space" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>space</span></a> <a href="https://mastodon.cesium.pw/tags/astronomy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>astronomy</span></a> <a href="https://mastodon.cesium.pw/tags/science" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>science</span></a> <a href="https://mastodon.cesium.pw/tags/plutopics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>plutopics</span></a></p>
Astronomer, Reinvented<p><a href="https://universeodon.com/tags/astronomy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>astronomy</span></a> The next images with my S50 were at 4x magnification.<br><a href="https://www.flickr.com/photos/philippughastronomer/54441801898/in/dateposted-public/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">flickr.com/photos/philippughas</span><span class="invisible">tronomer/54441801898/in/dateposted-public/</span></a></p>
Andrea Luck<p>That's a cool Martian cloud by CNSA Tianwen 1</p><p>Full size &amp; more info: <a href="https://flic.kr/p/2qY7yoS" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">flic.kr/p/2qY7yoS</span><span class="invisible"></span></a><br>Image Processing: Andrea Luck<br>Raw data: CNSA/CLEP/PEC/MoRIC</p><p>Mars, Tempe Terra April 1, 2022 </p><p><a href="https://fosstodon.org/tags/Space" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Space</span></a> <a href="https://fosstodon.org/tags/Astronomy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Astronomy</span></a> <a href="https://fosstodon.org/tags/Solarocks" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Solarocks</span></a> <a href="https://fosstodon.org/tags/Mars" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Mars</span></a></p>
Töpfer<p><a href="https://www.ardaudiothek.de/episode/sternzeit/riesenstern-im-skorpion-silberner-mond-beim-roten-riesen/deutschlandfunk/14435297/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">ardaudiothek.de/episode/sternz</span><span class="invisible">eit/riesenstern-im-skorpion-silberner-mond-beim-roten-riesen/deutschlandfunk/14435297/</span></a> <a href="https://hessen.social/tags/Mond" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Mond</span></a> bei Antares - ein Blickfang am tiefen Horizont. Heute zu sehen. <a href="https://hessen.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>astronomy</span></a> <a href="https://hessen.social/tags/Astronomie" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Astronomie</span></a></p>
UK<p><a href="https://www.europesays.com/uk/24938/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="">europesays.com/uk/24938/</span><span class="invisible"></span></a> Incredible Photo of a Dying Star Shows How Far Telescopes Have Come <a href="https://pubeurope.com/tags/Astronomy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Astronomy</span></a> <a href="https://pubeurope.com/tags/jameswebbspacetelescope" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>jameswebbspacetelescope</span></a> <a href="https://pubeurope.com/tags/jwst" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>jwst</span></a> <a href="https://pubeurope.com/tags/Nasa" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Nasa</span></a> <a href="https://pubeurope.com/tags/nebula" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>nebula</span></a> <a href="https://pubeurope.com/tags/Science" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Science</span></a> <a href="https://pubeurope.com/tags/Space" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Space</span></a> <a href="https://pubeurope.com/tags/Star" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Star</span></a> <a href="https://pubeurope.com/tags/UK" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>UK</span></a> <a href="https://pubeurope.com/tags/UnitedKingdom" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>UnitedKingdom</span></a> <a href="https://pubeurope.com/tags/webb" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>webb</span></a> <a href="https://pubeurope.com/tags/wise" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>wise</span></a></p>
franco_vazza<p>That was fast <br>The paper I posted on monday about the simulation hypothesis<br>arxiv.org/abs/2504.08461</p><p><a href="https://mastodon.social/@franco_vazza/114335432670575765" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">mastodon.social/@franco_vazza/</span><span class="invisible">114335432670575765</span></a></p><p>was cited this morning at a high energy neutrino conference 😱 😱 😱 😱 </p><p>(ok, in the wrong way perhaps, because the energetic KM3Net neutrino I used exactly to argue it's unlikely we live in a simulation, but whatever...)</p><p>(forwarded to me by a colleague, I was not there)</p><p><a href="https://mastodon.social/tags/astrodon" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>astrodon</span></a> <a href="https://mastodon.social/tags/science" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>science</span></a> <a href="https://mastodon.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>astronomy</span></a></p>
Astroland 🔭<p>Maanfoto van de dag: Edge Details. Fotoinfo: <a href="https://www2.lpod.org/wiki/April_16,_2025" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">www2.lpod.org/wiki/April_16,_2</span><span class="invisible">025</span></a> <a href="https://mastodon.social/tags/astronomie" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>astronomie</span></a> <a href="https://mastodon.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>astronomy</span></a> <a href="https://mastodon.social/tags/sterrenkunde" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>sterrenkunde</span></a> <a href="https://mastodon.social/tags/space" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>space</span></a> <a href="https://mastodon.social/tags/maan" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>maan</span></a> <a href="https://mastodon.social/tags/moon" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>moon</span></a> <a href="https://mastodon.social/tags/lpod" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>lpod</span></a></p>
Eve :verified:<p><a href="https://swiss.social/tags/knowledge" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>knowledge</span></a> <a href="https://swiss.social/tags/wissen" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>wissen</span></a> <a href="https://swiss.social/tags/wissenschaft" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>wissenschaft</span></a> <a href="https://swiss.social/tags/science" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>science</span></a> <a href="https://swiss.social/tags/Astronomy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Astronomy</span></a> <a href="https://swiss.social/tags/astronomie" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>astronomie</span></a> </p><p>Astronomers spot a planetary ‘suicide’ 🤓 <br><a href="https://www.science.org/content/article/astronomers-spot-planetary-suicide" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">science.org/content/article/as</span><span class="invisible">tronomers-spot-planetary-suicide</span></a></p>
David Redeker<p>Ik heb een Wikipediapagina gemaakt over de Nederlandse sterrenkundige Nathalie Degenaar.</p><p><a href="https://nl.wikipedia.org/wiki/Nathalie_Degenaar" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">nl.wikipedia.org/wiki/Nathalie</span><span class="invisible">_Degenaar</span></a></p><p>cc: <span class="h-card" translate="no"><a href="https://akademienl.social/@uva_amsterdam" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>uva_amsterdam</span></a></span> </p><p><a href="https://scicomm.xyz/tags/wiki" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>wiki</span></a> <a href="https://scicomm.xyz/tags/astronomy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>astronomy</span></a> <a href="https://scicomm.xyz/tags/astrodon" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>astrodon</span></a> <a href="https://scicomm.xyz/tags/astronomie" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>astronomie</span></a></p>
readbeanicecream<p>UH astronomer finds the universe could be spinning</p><p><a href="https://www.hawaii.edu/news/2025/04/14/universe-could-be-spinning/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">hawaii.edu/news/2025/04/14/uni</span><span class="invisible">verse-could-be-spinning/</span></a></p><p><a href="https://mastodon.social/tags/space" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>space</span></a> <a href="https://mastodon.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>astronomy</span></a> <a href="https://mastodon.social/tags/cosmology" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>cosmology</span></a> <a href="https://mastodon.social/tags/spaceexploration" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>spaceexploration</span></a> <a href="https://mastodon.social/tags/astrophysics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>astrophysics</span></a> <a href="https://mastodon.social/tags/uh" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>uh</span></a> <a href="https://mastodon.social/tags/universityofhawaii" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>universityofhawaii</span></a> <a href="https://mastodon.social/tags/hawaii" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>hawaii</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" target="_blank">#<span>pluto</span></a> <a href="https://mastodon.cesium.pw/tags/nasa" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>nasa</span></a> <a href="https://mastodon.cesium.pw/tags/space" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>space</span></a> <a href="https://mastodon.cesium.pw/tags/astronomy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>astronomy</span></a> <a href="https://mastodon.cesium.pw/tags/science" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>science</span></a> <a href="https://mastodon.cesium.pw/tags/plutopics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>plutopics</span></a></p>
Astronomer, Reinvented<p><a href="https://universeodon.com/tags/astronomy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>astronomy</span></a> The next images with my S50 were at 4x magnification.<br><a href="https://www.flickr.com/photos/philippughastronomer/54440698377/in/dateposted-public/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">flickr.com/photos/philippughas</span><span class="invisible">tronomer/54440698377/in/dateposted-public/</span></a></p>
Astroland 🔭<p>Amateur Astronomie foto van de dag: Omega Centauri. Foto info: <a href="https://www.aapod2.com" rel="nofollow noopener" 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" target="_blank">#<span>astronomie</span></a> <a href="https://mastodon.social/tags/sterrenkunde" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>sterrenkunde</span></a> <a href="https://mastodon.social/tags/fotografie" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>fotografie</span></a> <a href="https://mastodon.social/tags/sterrenkijken" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>sterrenkijken</span></a> <a href="https://mastodon.social/tags/aapod" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>aapod</span></a> <a href="https://mastodon.social/tags/heelal" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>heelal</span></a> <a href="https://mastodon.social/tags/universum" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>universum</span></a> <a href="https://mastodon.social/tags/sterren" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>sterren</span></a> <a href="https://mastodon.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>astronomy</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" target="_blank">#<span>pluto</span></a> <a href="https://mastodon.cesium.pw/tags/nasa" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>nasa</span></a> <a href="https://mastodon.cesium.pw/tags/space" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>space</span></a> <a href="https://mastodon.cesium.pw/tags/astronomy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>astronomy</span></a> <a href="https://mastodon.cesium.pw/tags/science" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>science</span></a> <a href="https://mastodon.cesium.pw/tags/plutopics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>plutopics</span></a></p>
Universität Innsbruck<p>⭐ 💥 ⭐ Merging star clusters: For the first time, researchers have observed the fusion of star clusters in dwarf galaxies — a discovery made by chance through observations from the <a href="https://social.uibk.ac.at/tags/Hubble" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Hubble</span></a> space telescope.</p><p>Read more in our news article or check out the original study in <a href="https://social.uibk.ac.at/tags/Nature" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Nature</span></a>:</p><p>🆕 <a href="https://www.uibk.ac.at/en/newsroom/2025/celestial-spectacle-witnessed/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">uibk.ac.at/en/newsroom/2025/ce</span><span class="invisible">lestial-spectacle-witnessed/</span></a></p><p>📖 <a href="https://www.nature.com/articles/s41586-025-08783-9" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">nature.com/articles/s41586-025</span><span class="invisible">-08783-9</span></a></p><p><a href="https://social.uibk.ac.at/tags/astrodon" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>astrodon</span></a> <a href="https://social.uibk.ac.at/tags/physics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>physics</span></a> <a href="https://social.uibk.ac.at/tags/astrophysics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>astrophysics</span></a> <a href="https://social.uibk.ac.at/tags/astronomy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>astronomy</span></a> <a href="https://social.uibk.ac.at/tags/galaxy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>galaxy</span></a> <a href="https://social.uibk.ac.at/tags/dwarfGalaxies" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>dwarfGalaxies</span></a></p>
Astronomy Picture of the Day<p>APOD from 2025-04-16</p><p>Halo of the Cat's Eye</p><p>The Cat's Eye <a href="https://mastodon.bot/tags/Nebula" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Nebula</span></a> (NGC 6543) features a mysterious halo spanning over three light-years. Its origins are unclear, but it represents an advanced stage in the evolution of Sun-like stars. The nebula's outer halo is estimated to be 50,000 to 90,000 years old.</p><p>HD image at <a href="https://apod.nasa.gov/apod/ap250416.html#space" rel="nofollow noopener" target="_blank"><span class="invisible">https://</span><span class="ellipsis">apod.nasa.gov/apod/ap250416.ht</span><span class="invisible">ml#space</span></a> <a href="https://mastodon.bot/tags/astronomy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>astronomy</span></a></p>
Trevor McLeod<p>Any budding scientists out there?</p><p>Here's an inspiring story.</p><p><a href="https://mastodon.social/tags/Science" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Science</span></a> <a href="https://mastodon.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>astronomy</span></a> <a href="https://mastodon.social/tags/education" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>education</span></a> </p><p><a href="https://scitechdaily.com/teen-wins-250k-for-using-ai-to-discover-1-5-million-hidden-objects-in-space/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">scitechdaily.com/teen-wins-250</span><span class="invisible">k-for-using-ai-to-discover-1-5-million-hidden-objects-in-space/</span></a></p>
Work In ProgressThe sky at night in Tenerife <a href="https://pixelfed.social/discover/tags/stars?src=hash" class="u-url hashtag" rel="nofollow noopener" target="_blank">#stars</a> <a href="https://pixelfed.social/discover/tags/night?src=hash" class="u-url hashtag" rel="nofollow noopener" target="_blank">#night</a> <a href="https://pixelfed.social/discover/tags/sky?src=hash" class="u-url hashtag" rel="nofollow noopener" target="_blank">#sky</a> <a href="https://pixelfed.social/discover/tags/astronomy?src=hash" class="u-url hashtag" rel="nofollow noopener" target="_blank">#astronomy</a>