Which celestial body is responsible for tides on Earth?
Which gas is most abundant in the Sun?
What is the name of the first artificial satellite launched into space?
What is the name of the galaxy we live in?
What is the scientific term used for the twinkling of stars?
When was Pluto removed from the list of planets?
What do we call a scientist who studies space?
What is the name of the first space tourist?
Which celestial object is sometimes called a "dirty snowball"?
Which spacecraft was the first to land on the Moon?
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