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<blockquote style="position: relative; padding-left: 55px;"><section><a href="https://mastodon.social/users/coreyspowell/statuses/114849892799634484">Corey S Powell (coreyspowell@mastodon.social)'s status on Monday, 14-Jul-2025 14:39:09 JST</a><a href="https://mastodon.social/@coreyspowell" title="coreyspowell@mastodon.social"><img src="https://gnusocial.jp/avatar/32826-48-20221119233213.webp" width="48" height="48" alt="Corey S Powell" style="position: absolute; left: 0; top: 0;">Corey S Powell</a></section><article><p>We have now seen three interstellar objects passing through the solar system--and each of them is distinctly different. </p><p>Comet 3I/ATLAS is by far the biggest, fastest &amp; oldest. It's probably older than our solar system, making it the most ancient object we've ever seen up close. </p><p><a href="https://bigthink.com/starts-with-a-bang/third-interstellar-object-3i-atlas/" rel="nofollow">https://bigthink.com/starts-with-a-bang/third-interstellar-object-3i-atlas/</a> <a href="https://mastodon.social/tags/space" rel="tag">#space</a> <a href="https://mastodon.social/tags/science" rel="tag">#science</a> <a href="https://mastodon.social/tags/astronomy" rel="tag">#astronomy</a> <a href="https://mastodon.social/tags/nature" rel="tag">#nature</a></p></article><footer><a rel="bookmark" href="https://gnusocial.jp/conversation/5349153#notice-10494163">In conversation</a><time datetime="2025-07-14T14:39:09+09:00" title="Monday, 14-Jul-2025 14:39:09 JST">about 7 months ago</time> <span>from <span><a href="https://mastodon.social/@coreyspowell/114849892799634484" rel="external" title="Sent from mastodon.social via ActivityPub">mastodon.social</a></span></span><a href="https://mastodon.social/@coreyspowell/114849892799634484">permalink</a><h4>Attachments</h4><ol><li><label><a rel="external" href="https://gnusocial.jp/attachment/4933500">In this VLT time-lapse video, 3I/ATLAS is seen moving to the right over the course of about 13 minutes. These data were obtained with the FORS2 instrument on the VLT on the night of 3 July 2025, just two days after the comet was first discovered. The data were made immediately public through the ESO archive.</a></label><br><video poster="" controls="controls"><source src="https://files.mastodon.social/media_attachments/files/114/849/889/758/635/213/original/6b7121918c2af0e5.mp4" type="video/mp4"></source></video></li><li><article><header><div>Domain not in remote thumbnail source whitelist: bigthink.com</div><h5><a href="https://bigthink.com/starts-with-a-bang/third-interstellar-object-3i-atlas/">Humanity's third interstellar object, 3I/ATLAS, is arriving now</a></h5><div></div></header><div>First 'Oumuamua, then Borisov, and now ATLAS have shown us that interstellar interlopers are real. Here's what the newest one teaches us.</div><footer></footer></article></li></ol></footer></blockquote>

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Corey S Powell (coreyspowell@mastodon.social)'s status on Monday, 14-Jul-2025 14:39:09 JST Corey S Powell
We have now seen three interstellar objects passing through the solar system--and each of them is distinctly different.
Comet 3I/ATLAS is by far the biggest, fastest & oldest. It's probably older than our solar system, making it the most ancient object we've ever seen up close.
https://bigthink.com/starts-with-a-bang/third-interstellar-object-3i-atlas/ #space #science #astronomy #nature
In conversationabout 7 months ago from mastodon.socialpermalink
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1. In this VLT time-lapse video, 3I/ATLAS is seen moving to the right over the course of about 13 minutes. These data were obtained with the FORS2 instrument on the VLT on the night of 3 July 2025, just two days after the comet was first discovered. The data were made immediately public through the ESO archive.
2. Domain not in remote thumbnail source whitelist: bigthink.com
  Humanity's third interstellar object, 3I/ATLAS, is arriving now
  First 'Oumuamua, then Borisov, and now ATLAS have shown us that interstellar interlopers are real. Here's what the newest one teaches us.

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