In all, there are only 400 known Mars rocks on Earth, comprising less than 1% of all known space rocks on the Blue Planet.

NEW YORK CITY, NY — A bidder here on Earth will soon shell out a lot of green for a piece of the red planet as Sotheby’s puts ...

The largest-known piece of Mars to be found on Earth will be up for bid and could be sold for up to $4 million at auction.

Ever been late because you misread a clock? Sometimes, the "clocks" geologists use to date events can also be misread.

Strange cone-shaped rocks led scientists to the hidden remains of one of Earth’s oldest asteroid impacts. It could help us find fossil life on Mars.

How did Earth, alone among the solar system's rocky planets, become the home for life? How, among all this frigid ...

Exploring Mars without leaving Earth 04:57. Katie Stack Morgan, a geologist at NASA's Jet Propulsion Laboratory, helps decide what pictures Curiosity should take and where it should go.

NASA images reveal shallow ice beneath Mars’s surface, offering a promising water source for future astronauts and clues to past life.

Look up! Mars is at its closest to Earth until 2035 today (Oct. 6), making it a perfect time to see the Red Planet with your own eyes. Today at 10:18 a.m. EDT (1418 GMT), Mars swoops within ...

Earth, Mars and Venus all looked pretty similar when they first formed. Today, Mars is dry, cold, and dusty; Venus has a hot, crushing atmosphere. Why did these sibling planets turn out so different?