Top ten questions (all questions)
- What's going to happen on December 21st 2012? (viewed 2142782 times)
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- At what speed does the earth move around the sun? (viewed 603437 times)
- Is the Moon moving away from the Earth? When was this discovered? (viewed 582013 times)
- How far is each planet from Earth? (viewed 480681 times)
- When will Halley's Comet return? (viewed 434777 times)
- How long does it take for the Sun's light to reach us? (viewed 398895 times)
- How many stars are there in our Galaxy (Milky Way)? (viewed 392496 times)
- Why do the planets orbit the sun? (viewed 392319 times)
- What is the universe expanding into? (viewed 377491 times)
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