Why does its southern hemisphere rise significantly above the smoother northern plains? A groundbreaking study using seismic ...

Rootless cones are small volcanic landforms ranging from several to several hundred meters in diameter, formed by continuous ...

An asteroid that orbited near Earth for a few months as a mini-moon may be a chunk of the moon that was blasted off by an impact thousands of years ago.

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.

Little Friends We've heard of underground parties — but this is ridiculous. A recently released study authored by microbial ...

Thousands of mysterious clay mounds found on Mars were formed by ancient water on the Red Planet's barren northern plains, ...

Images of Mars taken from orbit show thousands of mounds in a region sculpted by water billions of years ago. A robotic ...

The study of ancient lava formations on Mars is the most complete to date from a series of observations conducted on the ...

About 250 million years ago, you could pretty easily walk from Australia to North America – with a pit stop in Antarctica.

Engineers from Sierra Space, a private company, have developed a machine designed to extract oxygen from lunar soil, also ...

The country's fiery liquid landscape shifts, on a massive scale. By Michael Dumiak Kristín Jóhannsdóttir woke at two in the ...