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science
solar system
| Term | Definition |
|---|---|
| mass | a body of coherent matter, usually of indefinite shape and often of considerable size: a mass of dough. |
| weight | the amount or quantity of heaviness or mass; amount a thing weighs. |
| solar system | 8 planets and a sun |
| nebula | a cloud of interstellar gas and dust |
| solar nebula | The rotating flattened cloud of gas and dust from which the sun and the rest of the bodies in the solar system formed |
| planetesimal | Any of innumerable small bodies thought to have orbited the sun during the formation of the planets |
| crust | the outer layer of the earth |
| mantle | inbeteewn the crust and the core |
| core | the center of the earth |