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- 56 What's the baseball bat for? (seen in CRS-8 berthing NASA TV broadcast)
- 46 Why is the Sun's density less than the inner planets?
- 30 How did astronauts navigate the Lunar Roving Vehicle (LRV) over the surface of the Moon?
- 27 Do Astronauts lose finger nails in space?
- 24 Why did the Apollo Lunar Module have four landing legs?
- 22 How was it possible for the Apollo 11 to film and take pictures with such radiation?
- 21 What was the first programming book
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