A look at what Mars may have looked like once.
Video: The Evolution Of Mars.
This is a concept video by NASA’s Goddard Space Flight Center in Maryland of how the Martian atmosphere and landscape may have changed in the past 4 billion years.
All going to plan, NASA will launch MAVEN this Monday, to find out whether the theories of change are correct. MAVEN will orbit Mars with a suite of instruments that will scan the upper atmosphere for proof of the existence of a much richer ancient atmosphere above the Red Planet.
The spacecraft will arrive at the Red Planet on Sept. 22, 2014, and slip into an elliptical orbit ranging from a low of 93 miles above the surface to a high of 3,728 miles. It also will take five “deep dips” during the course of the mission, flying as low as 77 miles in altitude and providing a cross-section of the top of the atmosphere