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

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

Who thought a distant planet could hold the secret to the universe? K2-18b, an exoplanet 124 light-years away, recently set ...

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 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.

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 ...