Here are 3 quick facts about mars.
1.Mars is called red planet because iron oxide is prevalent on its surface
The presence of iron oxide gives mars a reddish appearance and hence the name Red Planet.Due to its red color it can easily be seen from earth with naked eye.This color of mars help humans to distinguish itself from other planet.
2.Earth Lichens can survive in Mars conditions.
It was discovered by the German Aerospace Center that Antarctic Lichens can survive in the conditions present in Mars.The conditions includes temperature below -51 degree Celsius.The experiment was conducted by placing lichen samples in Mars like chamber.
Lichen in mars substrate(courtesy:German Aerospace Center)