This video breaks down why K2-18b has suddenly become one of the most important planets in the search for life beyond Earth.

"Eventually, our own Voyager spacecraft will be extraterrestrial artifacts in other stellar systems." ...

Scientists in a recent breakthrough have discovered vast hidden magma systems beneath the surface of Mars, marking an “unexpected discovery” leading the researchers closer to finding ...

Scientists can't fully agree on what GJ504b actually is. It may be a massive planet or a brown dwarf, a mysterious class of ...

The planets are extremely large, with TOI-791 b being about the same size as Jupiter, and TOI-791 c even larger. Yet, they ...

A polarizing Harvard astronomer known for splashy theories about alien visits has been tapped by the White House to lead a ...

Renny Harlin revealed why he walked away from directing Alien 3 after 20th Century Fox rejected his radically different ideas ...

A Stanford scientist's model suggests many small rocky planets can't sustain atmospheres, potentially explaining the scarcity ...

Outside of the movies, it’s hard to find something more beloved within the Alien franchise than the 2014 video game Alien: ...

An unusual sighting in a NASA image has reignited speculation that something extraterrestrial once existed on Mars.

SETI scientists searched the interstellar object 3I/ATLAS for radio signals that could indicate extraterrestrial technology ...