Mars is the fourth planet from the sun at 141,600,000 miles.
The diameter of Mars is 4,200 miles. Mars is often called the Red Planet because rocks on its surface contain limonite, which is similar to rust. Mars has two moons.

Mars is dustier and drier than any desert on Earth. However, new evidence suggest that Mars may have once been a wetter and warmer planet. According to information gathered at the 1997 landing site of the Mars Poathfinder Mission, there may have been tremendous flooding on Mars about 2 to 3 billion years ago. Mars, then, may once have been more like Earth than was earlier thought.

Fantastic fact
Morning temperatures on Mars are much different than on Earth. If you were standing on Mars, your nose would be at least 68 °F colder than your feet!