1) What is the closest planet to the Sun? a) Earth b) Mercury 2) Which planet is known as the “Red Planet”? a) Neptune b) Mars 3) What galaxy do we live in? a) Andromeda b) Milky Way 4) What is the name of the only natural satellite of Earth? a) The moon b) Comet 5) What is that NASA? a) an independent agency of the U.S. federal government that is responsible for the nation's civilian space program and for aeronautics and space research b) organization about earth 6) Which planet has the most rings? a) Pluto b) Saturn 7) Do we as human can live outside the earth?  a) Yes b) No 8) What causes day and night on Earth? a) The Earth rotating on its axis b) The Sun spinning 9) Why is pluto not a planet? a) it fails to meet one of the three criteria set by the International Astronomical Union (IAU) b) Because Pluto it's not a planet 10) What do we call the path a planet takes around the Sun? a) Orbit b) Rotation

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