Top ten questions (all questions)
- What's going to happen on December 21st 2012? (viewed 2118080 times)
- What color is each planet? (viewed 890257 times)
- At what speed does the earth move around the sun? (viewed 564447 times)
- Is the Moon moving away from the Earth? When was this discovered? (viewed 543244 times)
- How far is each planet from Earth? (viewed 460636 times)
- When will Halley's Comet return? (viewed 412115 times)
- How many stars are there in our Galaxy (Milky Way)? (viewed 383909 times)
- How long does it take for the Sun's light to reach us? (viewed 382294 times)
- Why do the planets orbit the sun? (viewed 368552 times)
- What is the universe expanding into? (viewed 363987 times)
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