As astronomers study an exoplanet called K2-18b, conflicting research reveals how difficult it is to find evidence of life ...

"Until we can separate these signals more clearly, we have to be especially careful not to misinterpret them as signs of life ...

The search for life beyond Earth is a holy grail quest for many experts, but finding where to look is a core issue.

Astronomers had detected just a hint, a glimmer of two molecules swirling in the atmosphere of a distant planet called K2-18b — molecules that on Earth are produced only by living things.

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.

Astronomers detected dimethyl sulfide (DMS) on exoplanet K2-18b, sparking excitement about potential extraterrestrial life.

There’s always going to be a way to make something abiotically.” With these words, chemist Eleanor Browne of the University ...

In April, astronomers said they had detected a possible signature of life on the exoplanet K2-18b. Now, three independent analyses discount the evidence. An artist’s concept of the exoplanet K2 ...