Top ten questions (all questions)
- What's going to happen on December 21st 2012? (viewed 2149150 times)
- What color is each planet? (viewed 947970 times)
- At what speed does the earth move around the sun? (viewed 614829 times)
- Is the Moon moving away from the Earth? When was this discovered? (viewed 590202 times)
- How far is each planet from Earth? (viewed 487635 times)
- When will Halley's Comet return? (viewed 440335 times)
- How long does it take for the Sun's light to reach us? (viewed 403574 times)
- Why do the planets orbit the sun? (viewed 398743 times)
- How many stars are there in our Galaxy (Milky Way)? (viewed 394930 times)
- What is the universe expanding into? (viewed 381152 times)
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