Solar System

Mars Atmosphere Compared to Earth

Mars Atmosphere Compared to Earth

Carbon dioxide dominates Mars atmosphere. But Earth is rich in nitrogen and oxygen. Mars has a much thinner atmosphere. In fact, Earth is 100x denser.

10 Planet Venus Facts [Infographic]

10 Planet Venus Facts [Infographic]

Planet Venus neighbors the Earth. It’s the second planet closest the sun. Other facts include its counterclockwise rotation and how it rains sulfuric acid.