Mars, the fourth planet from the sun, is a dry, rocky world. Its famous red color has earned it the nickname the Red Planet. Mars has fascinated people throughout history, and today, it is one of the ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Buzz Aldrin set foot on the moon, and his new book encourages kids to take the first steps onto ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. (CNN) — Here’s a look at what you need to ...

The Martian atmosphere is extremely thin, possessing only 1% of Earth's atmospheric volume, primarily composed of carbon dioxide (96%) with negligible oxygen (less than 0.1%). Breathing on Mars ...

Mars' atmosphere is over 100 times thinner than Earth's. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Mars' atmosphere is over 100 times ...

CNN — (CNN) — Here’s some background information about Mars exploration. The United States and the Soviet Union are the only two countries to land a spacecraft on Mars. There have been nine successful ...