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Oxygen Ions May Be an Easy-to-Track Sign of Life on Exoplanets

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Exoplanets, dwarf star

This artists impression shows an imagined view from the surface one of the three planets orbiting an ultracool dwarf star just 40 light-years from Earth that were discovered using the TRAPPIST telescope at ESOs La Silla Observatory.

Credit: ESO/M. Kornmesser

The search for extraterrestrial life is fairly synonymous with the search for life as we know it.

From Ars Technica
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