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Neptune

December 15, 2009 by admin  
Filed under Neptune, Planets

Neptune

The blue clouds of Neptune are mostly frozen methane, the main chemical in natural gas — a fuel for heating and cooking on Earth. The other object shown is Neptune’s moon Triton. Image credit: NASA/JPL

Neptune is one of the two planets that cannot be seen without a telescope. The other is Pluto. Neptune is [...]

Venus

December 15, 2009 by admin  
Filed under Planets, Venus

Venus

The surface of Venus was scanned with radar waves beamed from orbiting space probes to produce this image. The colors are based on photos taken by probes that landed on Venus. Image credit: NASA

Venus is known as the Earth’s “twin” because the two planets are so similar in size. The diameter of Venus is [...]