Moon: Vital Stats
- DISTANCE FROM EARTH: 238,857 miles [average] [384,400 km] from Earth
- SIZE: 2,160 miles in diameter, about 27% that of Earth [3,475 km]
- GRAVITY: 17% Earth's gravity
- ORBITAL PERIOD: 29.5 days to orbit Earth
- LENGTH OF DAY: 708 hours
- TRAVEL TIME: By Apollo 11= 3 days; by car= 135 days by car at 70 mph [113 km/h]
NASA