Across
- 2. we live in a large spiral galaxy called this
- 4. round depression formed on the surface of a planet, moon, or other space object by the impact of a meteorite
- 8. when a meteor hits the surface
- 11. groups of stars imagined to form figures or designs in the night sky
- 13. consists of a sun, planets, and moons aorund the planet
- 14. small sand to boulderEarth'sles of space debris
Down
- 1. oval paths that resemble the shape of an egg or a football
- 2. when a meteoroid enters the earth's atmosphere
- 3. a compact chunk of frozen gases and dust
- 5. the region between the inner and outer planets
- 6. the first 4 inner planets are known as this
- 7. the study of life in the universe, including life on Earth and possibly extraterrestrial life
- 9. stars that are found in clustered groups
- 10. the 5 outer planets in our solar system
- 12. the path an object follows as it moves around another object