Beyond our solar system, countless alien worlds of lava, ice, water and noxious gas swirl through the cosmos. Here are some ...

An international team of astronomers reports the discovery of a new extrasolar world orbiting a nearby star known as HD 86728 ...

The first rocky planet ever spotted orbiting a burned out star called a white dwarf offers a glimpse of what may be in store ...

The James Webb Space Telescope has not spotted aliens 10 light years away as some conspiracy theories suggest.

(390 million mi) from Earth, underneath the cold seas of Europa, a horrifying, and vastly intelligent creature lurks. Can our ...

The red giant phase is pretty crazy. The star's outer atmosphere can expand to hundreds of times its initial size; some ...

Such ancient or non-human beings could reside somewhere inside the Earth or under the oceans, they say.

"A Sign in Space" simulated an extraterrestrial communication to see whether humans are prepared for the real deal.

The creator and writer of the series reveals the main reason why the story of the terrifying creature is set on our planet.

Harvard researchers Tim Lomas and Brendan Case, along with Michael Masters from Montana Technological University, have a new ...

Astronomers say that the first rocky planet orbiting an extinct star called a "white dwarf" gives an idea of what the Earth ...

There have been quite a few rather credible whistleblowers that have come forward with some wild stories about what they claim to know about the United ...