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Space Terms
| Term | Definition |
|---|---|
| Star | a fixed luminous point in the night sky which is a large, remote incandescent body like the sun |
| Galaxy | a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction |
| Universe | all existing matter and space considered as a whole; the cosmos |
| Multiverse | an infinite realm of being or potential being of which the universe is regarded as a part or instance |
| Planet | a celestial body moving in an elliptical orbit around a star |
| Space | the physical universe beyond the earth's atmosphere |
| Satellite | an artificial body placed in orbit around the earth or moon or another planet in order to collect information or for communication |
| Rocket | an elongated rocket-propelled missile or spacecraft |
| Gravity | the force that attracts a body toward the center of the earth, or toward any other physical body having mass |