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

"Star Trek" is home to countless alien species, many of whom offer beloved characters. Some are not. We rank the 10 most ...

With 3I/ATLAS streaking away from our planet, speculation remains as to whether the interstellar comet is alien or not.

With tons of "Star Trek" alien races depicted over the decades, consistency is a tall order. And in the case of these aliens, ...

It might seem worlds away from the Earth we know. But can "Star Trek" teach us anything about the economics of our own ...

Samus Aran, the science fiction protagonist in the Metroid series, is arguably Nintendo’s most mysterious character. She ...

A Harvard University astrophysicist has sparked a furious debate by warning he cannot rule out that extraterrestrials are ...

Comet 3I/ATLAS, a rare interstellar visitor, is visible this week as it departs the solar system, with some public events ...

Pluribus imagines Kepler-22b as an ocean world that sends a gift to humanity through radio waves. In real life, no such ...

Late Taiwanese star Alien Huang, who died from cardiovascular complications at the age of 36 last year, has been posthumously ...

I/ATLAS has passed its closest point to Earth, meaning we will soon lose sight of it for good. Some scientists want to send a spacecraft to chase down the alien comet — or the next interstellar object ...

Using JWST, scientists discovered PSR J2322-2650b — a carbon-rich, lemon-shaped exoplanet orbiting a pulsar — challenging ...