Across
- 1. the line around which a planet spins
- 4. a large mass of gas or rock that orbits a star
- 5. a shaking, or trembling motion
- 6. Solar flares occur on the Sun's _____.
- 8. to turn around a center point or line
- 9. This planet takes over 5,500 hours to rotate on it's axis.
- 11. The spacecraft that landed on Mars.
- 12. a bowl-shaped area on the ground
Down
- 1. a large, rocky object that orbits a star
- 2. A rover that collected information about Mars
- 3. An explosion of gas on the Sun is called a ___ flare.
- 5. Five planets can be seen without a _____.
- 7. a frozen mass of dust and gas in space
- 10. a space object smaller than an asteroid