21. Moon

21. Moon

Lick Observatory

http://antwrp.gsfc.nasa.gov/apod/image/9904/fullmoon_lick_big.jpg


Moon of Earth

Diameter: 3,474 km
Orbit Radius: 384,000 km
Orbital Period: 29.5 days
Rotational Period: 29.5 days
Average Temperature: -55°C
Max/Min Temperature: 123°C/-233°C
Composition: Rocky
Atmospheric Pressure: 0 bars
Gravity (Earth=1): 0.16
Mass (Earth=1): 0.01
Magnetic Field: No