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| Question | Answer |
|---|---|
| Milky Way Galaxy | Is the galaxy in which we live.It is a spiral shaped galaxy that contains about 200 billion stars, including our Sun. |
| asteroid | An asteroid is a large rock in outer space.Some can be very large, while others are as small as a grain of sand. |
| comet | A small frozen mass of ice and dust orbiting the Sun. |
| terrestrial | Relating to land. |
| orbit | To travel in a curved path around the Sun or a planet. |
| rotation | One complete turn on an axis. |
| satellite | A moon that orbits a planet. |
| sun | A star around which Earth and other planets revolve.It produces heat,light,and energy. |
| gas giant | Any of the second four planets from the sun, which are made of gas. |