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

Life on Earth extends far beyond the vibrant rainforests and sunlit coral reefs. Deep below the surface, an extraordinary ...

Understanding chorus waves is vital, as they create fast-moving, highly energetic electrons (known as killer electrons) that ...

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

Harvard scientists explain how Mars had warm spells billions of years ago, allowing rivers and lakes to exist.

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

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

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

Though it's a cold, dead planet, Mars still has its own natural beauty about it. This image shows us something we'll never see on Earth.

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

The car-sized Curiosity rover has spotted evidence of once quite hospitable environs on Mars.

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