Mars, the Red Planet, looks nothing like Earth today. However, its geological features indicate it once had a warm and wet ...

The new moon occurs April 27, and a day later Venus and Saturn will make a close approach to each other (known as a ...

A Martian spacecraft spied a Martian rover rumbling through the red desert. The new image captured by NASA's Mars ...

The NASA HALO capsule being built in Gilbert will serve as a habitat for astronauts orbiting the Moon before they launch onward to Mars.

Valleys on Mars suggest the Red Planet was once covered in flowing water — but it's still a mystery how that could have been.

New research suggests ancient Mars may have been warm and wet, with rainfall or snowmelt carving its iconic valleys.

There are a lot of things in Earth's night sky, and every now and again, they line up in such a way to give us all a little ...

The world's most famous telescope is celebrating in style with new views of Mars, nebulas and a galaxy that reminds us of home.

Space exploration missions have revealed that polar vortices aren’t uncommon beyond Earth. They’ve been observed throughout ...

Mars may once have had a relatively warm and wet climate conducive to flowing water, rain and snow, producing a terrain much ...

“The discovery of abundant siderite in Gale Crater represents both a surprising and important breakthrough in our ...

Scientists are eager to find out whether Mars was once capable of supporting life, and according to new Curiosity findings, ...