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

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

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

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

This film is set between the first Alien (1979) and its sequel, Aliens (1986). Were you at all apprehensive about meeting the ...

NASA says the launch window for the Europa Clipper mission opens on October 10, spacecraft to fly for more than five years to its destination.

Astronomers listened for radio signals emanating from planets in the TRAPPIST-1 system, but found no evidence of any ...

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

Warning! Contains Spoilers For Action Comics #1069! DC Comics has promised to reveal a pivotal tale in the early history of ...

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

New battleground-state polling says that when it comes to a thus-far hypothetical battle against marauding extraterrestrials, ...

Let's imagine that SETI , the Search for Extraterrestrial Intelligence, receives a signal from aliens approaching Earth.