Research findings are available online in the journal Nature Astronomy. The original story “ Interstellar Comet 3I/ATLAS ...

Using the Atacama Large Millimeter/submillimeter Array (ALMA), scientists have discovered that the interstellar invader comet ...

Interstellar comet 3I/ATLAS is even more extreme. The ratio of semi-heavy water to regular water is 30 times larger than in ...

New observations of interstellar comet 3I/ATLAS show high levels of deuterated water, suggesting it formed in a colder star ...

Astronomers have measured the highest-ever heavy water ratio in an interstellar object, found in comet 3I/ATLAS. ALMA observations reveal its birthplace was far colder and more shielded than our solar ...

Astronomers have conducted the first isotopic analysis of an interstellar comet, 3I/ATLAS, revealing it formed in an extremely cold, remote part of the Milky Way. The comet’s water contains deuterium ...

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

A mysterious interstellar comet older than the Sun is exposing alien chemistry and rewriting astronomy as we know it.

A comet named 3I/ATLAS was first discovered on July 1, 2025, and is located about 420 million miles away from Earth, ...

New observations of the interstellar comet 3I/ATLAS include the first measurement of the abundance of deuterated water ...

The new chamber, which will simulate space-like conditions and has 14 associated instruments to measure comet properties. Credit: Kreuzig et al. The new chamber, which will simulate space-like ...

The PanSTARRS Comet could make a visit to Nevada skies tomorrow night. Here's everything you need to know about the celestial ...