Researchers revealed that the planet, named HD 20794 d, has a mass six times greater than Earth's and orbits within the ...

Earth’ planet has shown many of the key factors to supporting life as we know it, according to Professor Luke O’Neill.

For decades, scientists have puzzled over traces of primordial helium—a rare isotope known as ³He—escaping from volcanic ...

Chances an asteroid may hit Earth in 2032 dropped to near zero, astronomers say. Here's what to know about 2024 YR4.

Feb. 18 marks the 95th anniversary of the discovery of our outermost planet-not-planet. Here's what to know about the short ...

"Shorelines are great locations to look for evidence of past life." Today, Mars is a chilly desert of rock and dust — but 4 ...

A White House science advisor recently war-gamed with space agency heads worldwide to devise a planet-saving defense to an ...

Deep within Earth’s mantle lie two enormous, continent-sized structures known as LLVPs. Scientists once believed these ...

Another night of observations revealed there is little to fear from the football-field-sized Asteroid 2024 YR4.

“Earthrise” begins with a quotation from William Anders, who, as a member of the first crew to circle the moon, took the ...

Check out the newest look at Noah Hawley's (FX's Fargo) Sydney Chandler-starring Alien: Earth that was included in a new FX Networks trailer.