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Mysteries of the Milky Way
Europa
Beyond Hubble
A look inside the universe
Apollo
Apollo 11Apollo 12Apollo 13Apollo 14Apollo 15Apollo 16Apollo 17In Memory of Alan ShepardAstronomy
Black HolesDark MatterAstronomy UpdatesAstrophysics
Quantum GravityQuantum MechanicsGeneral RelativityBlack Hole ThermodynamicsComments
Advertise With The StarGateFaster than light
Worm HoleswormholesTraveling To Other StarsSatellites
PhobosDeimosMoonTritonNeriedTitanCallistoSpace Crafts
Mars Global SurveyorGalileoMars Polar Space ProbePioneer 10Mars PathfinderDeep Space 1StarDustVoyager 2CassiniMars Climate OrbiterUlyssesThe systems of our world
VenusMercuryEarthMarsJupiterSaturnUranusNeptunePlutoThe Missions to Mars|
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 the moon at a glance Age: About 4.6 billion years old Distance from the earth: 221,456 at its shortest, at its longest it is 252,711. Diameter: About 2,160 miles Circumfrence: about 6,790 Surface area: about 14,670,000 square miles Rotation Period: 27 days, 7 hours, 43 minutes Revolution around the earth: 27 days, 7 hours, 43 minutes Average speed around the earth: 2,300 miles per hour Length of day or night: About 15 earth days each Temperature at equator: sun at zenith over maria, 260 F. Lunar night over maria, -280 F. Surface gravity: About 1/6 that of earth Escape velocity: 1½ miles per second Mass: 1/81 that of the earth Volume: 1/50 that of the earth Atmosphere: little or none. |
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