A super-Earth planet that dips in and out of its star's habitable zone has been discovered just 19.7 light-years away.

UK researchers have confirmed the existence of a “super Earth” located 20 light-years away that could reveal the existence of ...

Mars' southern hemisphere absorbs a lot of the sun's energy during the Red Planet's spring, and that may be causing Mars' ...

The fact that the cold, dry Mars of today had flowing rivers and lakes several billion years ago has puzzled scientists for ...

The 3.7-billion-year-old formations in the planet's Gale Crater suggest the presence of long-gone bodies of liquid water, ...

New research reveals ancient ripples on Mars, providing compelling evidence of long-lost lakes that once existed 3.7 billion ...

Fans of the billionaire Elon Musk are now saying that a book predicted the SpaceX and Tesla CEO becoming the leader of Mars.

The northern plains of Mars, marked by thousands of mounds and hills, hold significant evidence of the planet's watery past.

Experts told Newsweek about the difficulties of reaching Mars as the United States faces complex challenges in space policy.

Simpson and Chen ran mathematical models looking at how differently sized Earth-like worlds would have affected the rest of ...

A collection of Martian rocks could reveal details about potential past life on the Red Planet – but first NASA has to get ...

Planetary alignments aren't rare, but they can be when they involve six of the eight planets in our solar system.