The rusty world is full of mysteries—and some of the solar system's most extreme geology. Learn more about Earth's smaller, colder neighbor.

(CNN) — Here’s a look at the exploration of Mars. The United States, Soviet Union and China are the only three countries to land a spacecraft on Mars. There have been nine successful US Mars landings: ...

Discover 100 Space Facts That Will Leave You Speechless! Explore mind-bending realities from our solar system to distant ...

Experiments show that biomolecules trapped in pure ice could withstand the harsh radiation of Mars for tens of millions of years. When you purchase through links on our site, we may earn an affiliate ...