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solar system
| Term | Definition |
|---|---|
| mass | a large number of people |
| weight | the amount or quantity of heaviness or mass; amount a thing weighs. |
| solar system | the sun together with all the planets and other bodies that revolve around it. |
| nebula | a cloud of interstellar gas and dust |
| solar nebula | of gas and dust from which the sun and the rest of the bodies in the solar system formed, about 4.56 × 109 years. |
| planetesimal | one of the small celestial bodies that, according to one theory |
| crust | the brown, hard outer portion or surface of a loaf or slice of bread |
| mantle | a loose, sleeveless cloak or cape. |
| core | the central part of a fleshy fruit, containing the seeds |