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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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| Mercury- Mercury is the nearest planet to the sun. It has a diameter of 3,031 miles (4,878 kilometers), about two-fifths the earth's diameter. Mercury's mean distance from the sun is about 36 million miles (57.9 million kilometers) compared to 67,250,000 miles(108,230,000 kilometers) for Venus, the second closest planet to the sun. Mercury travels around the sun in an elliptical (oval shape) orbit. The planet is 28,600,000 miles(46 million kilometers) to the sun at its closest point, its about 43 million miles at its farthest point. Its 57 million miles to earth at its closest approach. One year on mercury is 88 earth days. The temperature is from -315 degrees to 648 degrees F. (-193 to342 C.) The atmosphere: Helium,hydrogen,oxygen Number of Satellites- None.  |
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