1) What do you call the invisible force that keeps us on the ground? a) Meteor b) Gravity c) Orbit d) Nebula 2) Who is a person trained to travel into space? a) Satellite b) Astronaut c) Comet d) Constellation 3) Which word means a path that something follows as it goes around another object in space, like the Earth around the Sun? a) Orbit b) Black Hole c) Galaxy d) Ancestor 4) What is a ball of ice and dust in space that leaves a bright tail when near the Sun? a) Satellite b) Meteor c) Comet d) Nebula 5) Which word describes a huge group of stars, planets, and dust held together in space? a) Black Hole b) Orbit c) Galaxy d) Constellation

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