astronomy, the science that studies the universe beyond the earth, astronaut, a person trained to participate in space flight, cosmonaut, an astronaut from Russia or the USSR, observatory, a building that has equipment for studying the sun, moon, planets, and stars., orbit, the path an object takes in space when it moves around a star, planet or moon., spacecraft, a vehicle designed to travel in space, biography, the story of the facts of a person’s life, journal, diary, telescope, an instrument that uses lenses to make distant objects appear larger.

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