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First X-ray image of interstellar comet 3I/ATLAS reveals a signature never seen in any other object from outside our solar system
When comet 3I/ATLAS swept through the inner solar system in late 2025, it gave astronomers something no interstellar visitor ...
Long before 3I/ATLAS slipped through the inner solar system, its water had already recorded the kind of place it came from.
An interstellar comet carries water unlike anything in our solar system, revealing a far colder birthplace and clues about ...
The water coming off comet 3I/ATLAS is not just unusual. It is extreme. Astronomers studying the interstellar comet found that its water is packed with an unusually heavy form of hydrogen called ...
Astronomers have identified an unusual chemical signature in the interstellar comet 3I/ATLAS, revealing that it contains ...
This artist’s impression compares the semi-heavy water content of the interstellar comet 3I/ATLAS (left) and Earth (right).
Rare interstellar comet 3I/ATLAS is revealing clues about the early Milky Way, offering scientists a glimpse into conditions billions of years ago.
ALMA reveals unusual “alien” water in interstellar comet 3I/ATLAS, showing it formed in an extremely cold, distant star ...
Comet C/2025 R3 (PanSTARRS) is brightening in the night sky in April. Here's when and how to spot the celestial show in ...
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