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 ...

We've all grown up dreaming of aliens landing on the Earth or laser beaming across the sky; well, either way, it's sci-fi and ...

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

Data from the James Webb Space Telescope on exoplanet K2-18b has revealed the "strongest hints yet of biological activity ...

The United States is offering to give illegal aliens $3,000 if they register for self-deportation on the CBP One app by the ...

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

Is 3I/ATLAS an alien probe? Breakthrough Listen uses the Green Bank Telescope to search for technosignatures as the ...

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

Researchers used Green Bank Telescope to detect radio signals from 3I/ATLAS just before its closest approach to Earth.

NASA's alien-hunting Europa Clipper spacecraft took seven hours of ultraviolet observations of interstellar comet 3I/ATLAS while both objects zoom toward Jupiter.

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