A series of studies have cast doubt on the sensational claim that "the strongest evidence yet" was found that life exists anywhere else besides Earth.

In April, astronomers said they had detected a possible signature of life on the exoplanet K2-18b. Now, three independent ...

"If the ultimate result of this story is that the public is more circumspect about future claims of life detection, that's ...

In April, scientists captured global attention by announcing they'd found a molecule in a faraway planet's atmosphere that ...

Astronomers published evidence of possible biosignatures on the planet K2-18b earlier this month, but another look at the data suggests the finding could be statistical noise ...