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8th grade STEMscopes CA Segment 2 Scope 3
| Term | Definition |
|---|---|
| Big Bang Theory | A theory that says the universe began as a small point that expanded rapidly about 13.7 billion years ago |
| Dust | Tiny particles of matter floating in space; condense under gravity to form stars and planets |
| Galaxy | A large grouping of stars in space |
| Gas | A state of matter with indefinite volume and shape |
| Gravity | The force that causes objects with mass to attract one another |
| Solar system | A star and the group of planets and other celestial bodies that are held by its gravitational attraction and revolve around it |