Mars is the fourth planet from the Sun. It is a terrestrial planet which means it is made out of rocks and metals. It is named after the Roman God of War. The days and seasons on Mars are similar to the days and seasons on Earth. A year on Mars is 687 Earth days long.
Did Mars Once Have Water?
It turns out…YES!! Rovers that have been to Mars have found evidence of Mars’ water-filled past. In fact, scientists believe that there is still water as ice under Mars’ surface. Using this information, scientists figured out that Mars could have been covered in oceans and rivers and would have been the right temperature for microbial life. A cause that made Mars lose its water is still a mystery. Scientists think that the atmosphere of Mars started fading. This caused the water to boil off and Mars to become cold and lonely.