Mars is the fourth planet from the Sun.
It's also known as "The Red Planet".
It looks a lot like our home, though instead of blue oceans and green land, Mars is home to an ever present red layer.
Earth and Mars are similar in a lot of ways.
The planet is named after Mars, the Roman god of war.
Only 16 of the 39 Mars missions have been successful.
Pieces of Mars have been found on Earth.
Mars was once believed to be home to intelligent life.