Across
- 2. – The path an object follows around another object in space.
- 3. – The largest planet in our solar system.
- 5. – Scientist who explained gravity and motion.
- 6. – Astronomer who improved the telescope and studied the planets.
- 8. Unit – The average distance between Earth and the Sun.
- 14. – The farthest major planet from the Sun.
- 15. – A rocky object that travels around the Sun.
Down
- 1. – The rigid outer layer of Earth that includes the crust and upper mantle.
- 4. – The ancient supercontinent that existed millions of years ago.
- 7. – A huge collection of stars, gas, dust, and planets.
- 9. – Scientist who proposed that the Sun is at the center of the solar system.
- 10. – The distance light travels in one year.
- 11. – The process where one tectonic plate moves beneath another.
- 12. – Scientist known for discovering the laws of planetary motion.
- 13. – The basic unit of length in the metric system.