Using the Atacama Large Millimeter/submillimeter Array (ALMA), scientists have discovered that the interstellar invader comet 3I/ATLAS formed in a much colder region of the Milky Way than our solar ...

Astronomers found 'heavy water' in interstellar comet 3I/ATLAS, suggesting it formed in a cold, unusual environment beyond ...

The presence of deuterium, an isotope of hydrogen, in 3I/ATLAS suggests the interstellar comet formed in a much colder place before our solar system existed.

A rare comet from another star system is revealing just how different alien solar systems may be from our own.

Rare interstellar comet 3I/ATLAS is revealing clues about the early Milky Way, offering scientists a glimpse into conditions ...

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Measurements of this interstellar comet’s molecular makeup show an excess of heavy water molecules that is dramatically different from anything known to have ever formed around our sun ...

An interstellar comet carries water unlike anything in our solar system, revealing a far colder birthplace and clues about planetary systems ...

Astronomers studying the interstellar visitor 3I/ATLAS have discovered the comet is unusually rich in alcohol — a chemical clue that could reveal how planets and icy bodies form around other stars.