Luna Fact Sheet Parent Planet: Earth Size (Diameter): 3475 km (How big it is) Mass: 7.349 x 10 22 kg (How much it weighs) Orbital Distance: 384,400 km (How far it is from Earth) Orbital Period: 28 days (How long it takes to make one orbit) Rotational Period: 28 days (How long it takes to rotate once on its axis) Orbital Velocity: 1.02 km/s (How fast it travels) Atmosphere: None Luna is the only natural satellite of Earth and is one of the darker objects in the solar system.
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Luna Fact Sheet