Across
- 5. Optical instrument used to view distant objects in space.
- 7. Bright streak of light caused by a meteoroid burning up in the Earth's atmosphere.
- 9. Glowing celestial object in the night sky.
- 10. Huge system of stars, gas, and dust in space.
- 12. Icy object that orbits the sun and has a tail of gas and dust.
- 13. Artificial object that orbits around a planet or other celestial body.
- 14. Large celestial body that orbits around the sun.
- 15. Vehicle that is propelled into space by engines.
Down
- 1. Force that attracts objects toward each other.
- 2. All of space and everything in it.
- 3. Vast cloud of gas and dust in space.
- 4. Natural satellite that orbits a planet.
- 6. Person who travels to space and explores the universe.
- 8. Path followed by an object as it revolves around another object.
- 11. Small rocky object that orbits the sun.
- 13. Bright, hot ball of gas that provides light and heat.