Across
- 4. a chuck of ice, dust, and rock that moves around the sun
- 5. a rock that moves around the sun
- 7. one complete trip of the Earth around the sun
- 10. The tendency of a moving object to keep moving in a straight line
Down
- 1. It is the force of attraction between objects
- 2. a group of stars that make a pattern in the night sky
- 3. an object that makes its own energy, including heat and light
- 6. a complete spin on Earth´s axis
- 8. a natural or artificial object that circles another object in space
- 9. a very large group of billions of stars, ours is Milky Way