Top ten questions (all questions)
- What's going to happen on December 21st 2012? (viewed 2101492 times)
- What color is each planet? (viewed 858461 times)
- At what speed does the earth move around the sun? (viewed 543664 times)
- Is the Moon moving away from the Earth? When was this discovered? (viewed 523556 times)
- How far is each planet from Earth? (viewed 449580 times)
- When will Halley's Comet return? (viewed 388054 times)
- How many stars are there in our Galaxy (Milky Way)? (viewed 375802 times)
- How long does it take for the Sun's light to reach us? (viewed 369419 times)
- Why do the planets orbit the sun? (viewed 355666 times)
- What is the universe expanding into? (viewed 353591 times)
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