Top ten questions (all questions)
- What's going to happen on December 21st 2012? (viewed 2102760 times)
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- At what speed does the earth move around the sun? (viewed 545812 times)
- Is the Moon moving away from the Earth? When was this discovered? (viewed 525347 times)
- How far is each planet from Earth? (viewed 450544 times)
- When will Halley's Comet return? (viewed 391432 times)
- How many stars are there in our Galaxy (Milky Way)? (viewed 376783 times)
- How long does it take for the Sun's light to reach us? (viewed 371500 times)
- Why do the planets orbit the sun? (viewed 356809 times)
- What is the universe expanding into? (viewed 354614 times)
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