Cosmic Scale
Mercury vs The Moon: size comparison
Mercury is about 1.40 times wider than The Moon: 4,879 km across against 3,475 km.
Compare them in 3D, at true scale
| Mercury | The Moon | |
|---|---|---|
| Diameter | 4,879 km | 3,475 km |
| Mass | 3.30 × 10²³ kg | 7.34 × 10²² kg |
| Light crosses it in | 0.02 seconds | 0.01 seconds |
- Mercury has about 2.8 times the volume of The Moon.
- Mercury is about 4.5 times more massive than The Moon.
- Light takes 0.02 seconds to cross Mercury, and 0.01 seconds to cross The Moon.
Mercury: A year on Mercury is shorter than one of its days.
The Moon: It drifts about 3.8 cm farther from Earth every year.