On its one-year anniversary, the NASA's Curiosity Rover sang the “Happy Birthday” tune to itself on Mars.
had an oxygen-rich
Mars' craters larger than 60 km are named for deceased scientists, writers and others who have contributed to the study of Mars.
The German Aerospace Center discovered that Earth lichens can survive in simulated Mars conditions.
Craters on Mars under 60 kilometres in diameter are named after towns on Earth with populations under 100,000.
According to a 1967 U.N. treaty, nobody can own celestial bodies such as Mars or the Moon.