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What color would Mars be if you were standing on it?
(Advanced)
What do astronauts do all day in the International Space Station?
(Intermediate)
What do astronauts eat in space? Can they grow food?
(Beginner)
What would happen if a human were exposed to space without wearing a spacesuit?
(Intermediate)
What would happen if you took off your helmet in space?
(Beginner)
Who has landed on the moon?
(Beginner)
Why do astronauts in space need to exercise?
(Beginner)
Why do humans want to go in space?
(Beginner)
Why do photos of space taken from space never show any stars?
(Intermediate)
Why doesn't NASA build rotating spacecraft to simulate gravity?
(Intermediate)
Why don't astronauts sublimate in space?
(Advanced)
Will astronauts ever be able to go ice-skating on Europa?
(Intermediate)
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Is the Moon moving away from the Earth? When was this discovered? (Intermediate)
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Is the distance from the Earth to the Sun changing? (Advanced)
How does the position of Moonrise and Moonset change? (Intermediate)
At what speed does the Earth move around the Sun? (Beginner)
What is the difference between a "star" and a "sun"? (Beginner)
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How do you measure the distance between Earth and the Sun? (Intermediate)
What was the bright, smoothly moving star that I saw? (Beginner)
What is the difference between a "star" and a "sun"? (Beginner)
Is the distance from the Earth to the Sun changing? (Advanced)
How does the position of Moonrise and Moonset change? (Intermediate)
Why is the moon in a different place every night? (Beginner)
How can we see the Milky Way if we are inside it? (Intermediate)
Which planet is most similar to Earth? (Intermediate)
At what speed does the Earth move around the Sun? (Beginner)
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What color is each planet? (Intermediate)
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How far is each planet from Earth? (Intermediate)
How do you measure the distance between Earth and the Sun? (Intermediate)
Is the Moon moving away from the Earth? When was this discovered? (Intermediate)
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How long does it take for the Sun's light to reach us? (Beginner)
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