Across
- 2. icy body with a glowing tail
- 4. rocky object orbiting the Sun
- 7. related to the atom’s nucleus
- 9. speed in a specific direction
- 10. object that orbits a planet
- 11. energy that lets us see
- 14. cloud of gas and dust in space
- 15. huge system of stars and dust
- 16. curved path of an object in space
Down
- 1. change in speed or direction
- 3. natural satellite of a planet
- 5. large object that orbits a star
- 6. distance between wave peaks
- 8. hole object with extremely strong gravity
- 10. hot glowing ball of gas in space
- 12. force that pulls objects toward each other
- 13. energy traveling as waves or particles