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Interstellar comet gave scientists their first taste of alien water

In late 2025, astronomers spotted an interstellar comet making a quick trip through the solar system. 3I/ATLAS was discovered ...
Space.com

How did interstellar comet 3I/ATLAS capture our imagination in 2025?

It came from outer space. Interstellar space, to be precise. From somewhere beyond the influence of our sun, possibly from one of our Milky Way galaxy's most ancient stars, one that formed long before ...