From Viking to Perseverance, scientists have spent decades chasing chemical hints that could point to life beyond Earth.

From mudstones on Mars to strange gases in exoplanet atmospheres, tentative evidence for extraterrestrial life is starting to ...

Astronomers thought they had seen the "first hints of life on an alien world" this year, but they disappeared under closer ...

In the many decades of NASA exploration, there has only been one detection that got on that scale. It was collected by the ...

Data from the James Webb Space Telescope on exoplanet K2-18b has revealed the "strongest hints yet of biological activity outside the solar system," according to a University of Cambridge study.

One of Britain’s most prominent space scientists believes humanity may finally get an answer to one of its oldest questions ...

Scientists suggest the first alien signal we detect could be a desperate cry for help from a fading civilization.

Historically, many scientists and society have been fascinated by the prospect of making contact with extraterrestrial ...

A new analysis of Saturn's moon Titan that reduced the odds of a subsurface liquid ocean has increased the chances of ...

Long before scientists discovered that other stars in the universe host their own planetary systems, humanity had ...