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Top ten questions (all questions)

  1. What's going to happen on December 21st 2012? (viewed 2132700 times)
  2. What color is each planet? (viewed 913275 times)
  3. At what speed does the earth move around the sun? (viewed 585788 times)
  4. Is the Moon moving away from the Earth? When was this discovered? (viewed 564970 times)
  5. How far is each planet from Earth? (viewed 469839 times)
  6. When will Halley's Comet return? (viewed 426709 times)
  7. How long does it take for the Sun's light to reach us? (viewed 391130 times)
  8. How many stars are there in our Galaxy (Milky Way)? (viewed 388701 times)
  9. Why do the planets orbit the sun? (viewed 380076 times)
  10. What is the universe expanding into? (viewed 371176 times)
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