| Term | Definition |
|---|
| solar system | a star and all the other planets and other objects that revolve around it |
| planet | a body that revolves around a star |
| galaxy | a grouping of gas, dust, and many stars plus any objects that orbit those stars |
| constellation | a pattern of stars named after a mythological or religeous figure, an object or an animal |
| universe | everything that exists, including such things as stars, planets, gas, dust and energy |
| star | a huge ball of very hot gasses in space |
| axis | an imaginary line that passes through earths center and its north and south poles |
| rotation | to spin on an axis |
| revolution | to travel in a closed path |
Combine with other sets
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