知识世界

Astronomy:Spacefiles — Lord of the Rings

Saturn， lord of the rings， God of the harvest， is the sixth planet from the sun. Taking almost thirty years to complete a revolution. Second largest planet， Saturn's diameter is 120，000 kilometers， the width of nine earths. Saturn could accomodate earth， 752 times， far fewer than Jupiter. Saturn has a tilt. Earth leans at 23.4 degrees， Saturn at 27.

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  Astronomy： Threat from Space

  
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  Astronomy： Galileo and the Milky Way

  
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  Astronomy： Spacefiles — Lord of the Rings

  
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  Astronomy： Spacefiles — Venus

  
• 05

  Astronomy： Spacefiles — Sun

  
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  Astronomy： The Story of Aviation

  
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  Astronomy： Spacefiles — Galaxy

  
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  Astronomy： History of the Race to the Moon

  
• 09

  Astronomy： Deep Impact

  
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  Astronomy： Edwin Powell Hubble and the Expanding Universe