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

NASA’s search for life beyond Earth is no longer a distant dream but a coordinated campaign that now stretches from Martian ...

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

For more than a century, popular culture has trained us to picture extraterrestrials as bug-eyed, bipedal “little green men” ...

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

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

The Deep Space Network (DSN) is just the sort of tool aliens could one-day detect, transmitting from Earth. Credit: NASA/JPL What if the first signal ever detected from an alien lifeform wasn't a ...

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

Polling shows that nearly half of Americans now believe aliens have visited this planet—and that the number who aren't sure ...