Comets | smithsonianmag.comhttps://www.smithsonianmag.com/rss/tag/comets/RSS feed for CometsenMon, 29 Jun 2026 16:02:32 +0000A Rare Comet Made History as the Third Known Interstellar Object to Fly Through Our Solar System. Studies Are Now Revealing the Mysterious Conditions in Which It Formedhttps://www.smithsonianmag.com/science-nature/a-rare-comet-made-history-as-the-third-known-interstellar-object-to-fly-through-our-solar-system-studies-are-now-revealing-the-mysterious-the-mysterious-conditions-in-which-it-formed-180989037/In the latest research, telescope observations of 3I/ATLAS examine its chemical structure and suggest that it took shape in a peripheral region of a relatively calm planetary systemMon, 29 Jun 2026 16:02:32 +0000https://www.smithsonianmag.com/science-nature/a-rare-comet-made-history-as-the-third-known-interstellar-object-to-fly-through-our-solar-system-studies-are-now-revealing-the-mysterious-the-mysterious-conditions-in-which-it-formed-180989037/Interstellar Comet 3I/ATLAS Might Be the Oldest Object Ever Seen in Our Solar System, a Study Suggestshttps://www.smithsonianmag.com/smart-news/interstellar-comet-3i-atlas-might-be-the-oldest-object-ever-seen-in-our-solar-system-a-study-suggests-180989007/Based on the composition of gases spewed by the icy space rock, researchers estimate that our guest might be up to 12 billion years old—about three times the age of the solar systemWed, 24 Jun 2026 19:55:27 +0000https://www.smithsonianmag.com/smart-news/interstellar-comet-3i-atlas-might-be-the-oldest-object-ever-seen-in-our-solar-system-a-study-suggests-180989007/