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PS U12 Vocabulary
Pantoja Science Unit 12 Vocabulary
Term | Definition |
---|---|
solar system | made up of a star and the planets and other space objects that revolve around it. |
Planet | a large, round body that revolves around a star. |
Dwarf Plaent | nearly round bodies whose orbits cross the orbits of other bodies. |
Asteroids | rock and iron objects that orbit the sun |
Comet | a chunk of frozen gases, rock, ice and dust. |
Astronomy | the study of objects in space and their characteristics. |
Stars | huge balls of hot, glowing gases that produce their own heat and light. |
Galaxy | a group of billions of stars, the objects that orbit the stars, gas, and dust. It is held together by gravity. |
Irregular Galaxies | Irregular galaxies do not have any particular shape. |
Elliptical Galaxies | are brightest at their center and are shaped like a perfect sphere or a flattened globe. |