1) What is an astronaut? a) A person who travels to space b) A rocket 2) Which planet is closest to the Sun? a) Venus b) Mercury 3) What is the biggest planet in our Solar System? a) Jupiter b) Saturn 4) What do we call the force that keeps us on the ground? a) Gravity b) Mass 5) Which planet has rings around it? a) Saturn b) Neptune 6) What is the Sun? a) A star b) A planet 7) What is Pluto? a) A moon b) A dwarf planet 8) Who was the first person to walk on the Moon? a) Neil Armstrong b) Albert Einstein 9) What is Earth’s natural satellite? a) The Moon b) Sun 10) What is the name of our galaxy? a) The Solar System b) The Milky Way

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