Mars
- Mars is the fourth planet from the Sun and the second-smallest planet in the solar system.
- Mars is also known as the Red Planet because of its reddish appearance, caused by iron oxide or rust on its surface.
- Mars has two small moons named Phobos and Deimos, which are thought to be captured asteroids.
- Mars has a thin atmosphere made up mostly of carbon dioxide, with traces of nitrogen and argon.
- Mars has the largest volcano in the solar system, Olympus Mons, and the deepest canyon, Valles Marineris.
- Mars is home to the largest dust storms in the solar system, which can cover the entire planet and last for months.
- Mars has polar ice caps made up of frozen water and carbon dioxide.
- Mars has been visited by multiple spacecraft, including rovers and orbiters, to study its geology and search for signs of past or present life.
- Mars has a day length similar to Earth, with a day known as a "sol" lasting 24 hours and 39 minutes.
- Mars experiences extreme temperature variations, ranging from -143°C (-225°F) at the poles to 35°C (95°F) at the equator.