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| Question | Answer |
|---|---|
| milky way galaxy | Is the galaxy in which we live.It is a spiral shaped galaxy that cotains 200 billion stars,including our Sun. |
| asteroid | An asteroid is a large rock in outer space.Some can be very large,while others are small as a grain of sand. |
| comet | A small frozen mass of ice and dust orbiting the sun. |
| terrestrial | Related 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 arond which Earth and other planets revolve.It produces heat,light,and Earth |
| gas giant | Any of the second four planets from the Sun ,which are made of gas |