K2-18b, an exoplanet 120 light-years away, may be the best hope to confirm that life exists beyond Earth. Here's what to know ...

A team of astronomers claims to have sniffed out a “biosignature” in the atmosphere of a distant planet called K2-18b. But not everyone agrees that it signals life.

A molecule detected on a planet 124 light-years away is produced on Earth by decaying phytoplankton and other microbes. There ...

NASA says that this image, originally taken in 2017 by the Mars Reconnaissance Orbiter, shows several holes on the surface of ...

In a potential landmark discovery, scientists using the James Webb Space Telescope have obtained what they call the strongest ...

K2-18b, an exoplanet 120 light-years away, may be the best hope to confirm that life exists beyond Earth. Here's what to know ...

And although the first sign of possible extraterrestrials detected in the cosmos didn't come in the form of little green aliens ... planet for clues that life could have existed on its surface.

The first sign of possible extraterrestrials detected in the cosmos didn't come in the form of little green aliens ... planet – due to its potential to possess a hydrogen-rich atmosphere and ...