Mars
Mars is the fourth planet from the Sun.
Named after the Roman god of war, and often described as the "Red Planet" due to its reddish appearance. Mars is a terrestrial planet with a thin atmosphere composed primarily of carbon dioxide.
Mars Facts
- Equatorial Diameter: 6,792 km
- Polar Diameter: 6,752 km
- Mass: 6.39 x 10^23 kg (0.11 Earths)
- Moons: 2 (Phobos & Deimos)
- Orbit Distance: 227,943,824 km (1.38 AU)
- Orbit Period: 687 days (1.9 years)
- Surface Temperature: -87° to -5°C
- First Record: 2nd millennium BC
- Recorded By: Egyptian astronomers