Mars, it is the fourth planet from the sun. It is closet planet to earth. Mars is the planet with more solar exploration than any other planet in our universe. Mars is the one planet that has an atmosphere similar to ours. Mercury, Venus, and Pluto have had all of their atmospheres burned off and Jupiter, Saturn, Uranus, and Neptune all have atmospheres that are hundreds of time more violent than the calm atmospheres of Earth and Mars. Mars is also the only planet in which we have identified that there was once water on the surface of the planet. …
