More on perihelion from Fact Monster:

• Astronomical Terms - Astronomical Terms The Milky Way, the galaxy containing our solar system, is about 100,000 ...
• Astronomical Terms - Astronomical Terms The Milky Way, the galaxy containing our solar system, is about 100,000 ...
• Vulcan, in astronomy - Vulcan Vulcan, in astronomy, hypothetical planet whose existence was proposed by Leverrier to ...
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