Cosmic Scale
Earth vs Mars: size comparison
Earth is about 1.88 times wider than Mars: 12,740 km across against 6,779 km.
Compare them in 3D, at true scale
| Earth | Mars | |
|---|---|---|
| Diameter | 12,740 km | 6,779 km |
| Mass | 5.97 × 10²⁴ kg | 6.42 × 10²³ kg |
| Light crosses it in | 0.04 seconds | 0.02 seconds |
- Earth has about 6.6 times the volume of Mars.
- Earth is about 9.3 times more massive than Mars.
- Light takes 0.04 seconds to cross Earth, and 0.02 seconds to cross Mars.
Earth: The only known world with life — and liquid oceans on its surface.
Mars: Home to Olympus Mons, a volcano nearly three times the height of Everest.