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Earth-Size “Lone Wolf” Planets May Host Life Theoretical worlds could harbor under-ice oceans, study shows. Across the galaxy, countless “rogue” Earths may have been ejected from their planetary neighborhoods and are now zipping alone through space, previous studies have suggested. Now, new research says some of these worlds may have enough heat to support liquid water—and maybe life—without energy from a star.

Earth-Size “Lone Wolf” Planets May Host Life

Theoretical worlds could harbor under-ice oceans, study shows.

Across the galaxy, countless “rogue” Earths may have been ejected from their planetary neighborhoods and are now zipping alone through space, previous studies have suggested. Now, new research says some of these worlds may have enough heat to support liquid water—and maybe life—without energy from a star.