The other day I happened to read something about Mars that mentioned the high wind there. If there is no air in space, how can there be wind on Mars? There is lots of air on Mars. It just isn’t air we can breathe. The atmosphere of Mars is 96 percent carbon dioxide, about 3 percent nitrogen and 1 percent other stuff, including water vapor and a little bit of oxygen. And it is a very thin atmosphere. The average air pressure there is only about 1 percent of Earth’s.