Interstellar Comet 3I/ATLAS Formed Up To 12 Billion Years Ago, New Observations Suggest

Jun 22, 2026 - 16:15
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Interstellar Comet 3I/ATLAS Formed Up To 12 Billion Years Ago, New Observations Suggest
Hubble captured this image of 3I/ATLAS on July 21, 2025, when the comet was 446 million km (277 million miles) from Earth. Image credit: NASA / ESA / David Jewitt, UCLA / Joseph DePasquale, STScI.

The interstellar comet 3I/ATLAS carries a chemical fingerprint unlike anything in our Solar System, and it may have formed 10 to 12 billion years ago, before our Sun even existed, according to two papers published in the journal Nature.

The post Interstellar Comet 3I/ATLAS Formed Up To 12 Billion Years Ago, New Observations Suggest appeared first on Sci.News: Breaking Science News.

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