10 Interesting Facts About Mars

1. Mars Had Water In The Ancient Past:

2. Mars Has Frozen Water Today:

3. Mars Used To Have A Thicker Atmosphere:

4. Mars Has Some Extreme Highs And Lows In Terrain:

5. Mars Has Two Moons - And One Of Them Is Doomed:

6. We Have Pieces Of Mars On Earth:

7. Mars Would Kill An Unprotected Astronaut Quickly:

8. In The Early Space Age, We Thought Mars Was Like The Moon:

9. Mars Has Methane In Its Atmosphere:

10. Mars Is A Popular Spacecraft Destination: