Mars. From forming black holes to phantom dark energy, discover the cosmic mysteries astronomers uncovered last year.

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 ...

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 ...

NASA’s Europa Clipper mission is set to investigate Jupiter’s icy moon for signs of a vast subsurface ocean and the chemical ...

The research is mounting up that we might not be alone in this big wide world. So what's the likelihood that aliens are out ...

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 ...

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

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

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