Dive into the fascinating theory that octopuses might not be from Earth—are they really aliens?

Scientists may need to broaden their horizons in their search for alien life.

NO ALIENS, dead or alive, have ever been taken to Porton Down, a government website proclaimed last year in an attempt to ...

Dubbed HD 137010 b, the planet might fall just within the outer edges of its star's 'habitable zone', meaning there could be liquid water on its surface and a suitable atmosphere for life.

Chinese scientists' claims that their "Sky Eye" telescope could have picked up signals from intelligent aliens have been met ...

Bacteria that thrive on Earth may not make it in the alien lands of Mars. A potential deterrent is perchlorate, a toxic chlorine-containing chemical discovered in Martian soil during various space ...

Astronomers suspect that a massive metallic cloud swirling in a nearby star system could be hiding a giant planet or dwarf star from view, after it drastically dimmed a sun-like star for around nine ...

For readers seeking intellectually ambitious, thought-provoking fiction that bridges science, history and human complexity, ...

A scientist at the University of Glasgow has delved into the possible existence of ...

Using data gathered by NASA's Juno Jupiter orbiter, scientists estimate that Europa's ice shell is about 18 miles thick — ...

Forget flying cars and laser guns, NASA says true science fiction is something else entirely. Their latest list highlights ...

A new theory has suggested there are mysterious forces lurking under the Bermuda Triangle, which has led to boat sinking and stalling.