Is there any oxygen or gravity on mars?
Mars may have oxygen, but it is locked inside of ice at the poles. If you look at an ice cube, you can see a bunch of tiny bubbles trapped under the surface. A long time ago, scientists believe that mars was much like earth is today. For example, they can see places where rivers might have traveled. Some event caused the planet to become barren, most likely a large meteor strike. But the oxygen that used to be in the atmosphere is still preserved in the ice caps. Also, any object in space has gravity. Even something as small as a quarter has gravity, it is just such a small amount that it is undetectable. So yes, mars does have gravity as well 🙂 hope this helps!
