Here’s how it works. The distance to Mars from Earth varies considerably depending on their orbits around the sun. In theory, the closest Mars and Earth would get is when Mars reaches its ...

When Phobos, the larger of Mars’ two moons, passed in front of the sun on August 20, NASA’s Curiosity rover was watching. Scientists carefully controlled Curiosity to snap eclipse images three ...

It takes 687 Earth days for the Red Planet to go around the Sun one time.Rotation: Mars spins on its axis at about the same speed as Earth does. It takes 24 hours and 37 minutes (about 1 Earth day ...

The sun has launched a surprise CME directly at Mars, which could spark auroras and damage the Red Planet's atmosphere when it hits on Sept. 1. When you purchase through links on our site ...