Interstellar Visitor 3I/ATLAS Shows Water Ice Behaves the Same Across Alien Star Systems

Targets of opportunity sometimes happen in astronomy, and we got a major one when the third interstellar object, 3I/ATLAS, was discovered in July 2025. And it just so happens that in the intervening years between the last known interstellar visitor (2I/Borisov in 2019), we got a major upgrade in our observational capabilities with the launch of the James Webb Space Telescope (JWST). A new paper from a team of researchers led by Dr. Silvia Protopapa of NASA’s Goddard Space Flight…

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