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| Question | Answer |
|---|---|
| milky way galaxy | is the galaxy in wich 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 planet. |
| rotation | one complete turn on an axis. |
| satellite | a moon that orbits a planet. |
| sun | a star around wich earth and other planets revolve.it produces heat,light,and energy. |
| gas giant | any of the second four planets from the sun,wich are made of gas. |