star, a fixed luminous point in the night sky which is a large, remote incandescent body like the sun., planet, a celestial body moving in an elliptical orbit round a star., sun, the star round which the earth orbits., astronaut, a person who is trained to travel in a spacecraft., satellite, an artificial body placed in orbit round the earth or moon or another planet in order to collect information or for communication., spacecraft, a vehicle used for travelling in space..

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