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

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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