Across
- 3. - a region in space where gravity is so strong nothing can escape
- 5. - the planet famous for its bright, icy rings
- 8. - an instrument that makes distant objects in space appear closer
- 10. - when one celestial body moves into the shadow of another
- 12. -the invisible force that pulls objects toward eachother
- 13. - the galaxy that contains our solar system
- 16. - a powerful explosion marking the death of a star
- 18. - the scientific study of stars, planets and the universe
Down
- 1. - everything that exist: space, time, matter and energy
- 2. - a group of stars forming a recognizable pattern in the universe
- 4. - a massive system of stars, dust and gas bound by gravity
- 6. - a small icy body that leaves a glowing tail when near the sun
- 7. - a giant cloud of gas and dust where stars are born
- 9. - a glowing ball of hot gases that shine with their own light
- 11. - the distance light travels in one year
- 14. - a rocky that orbits the sun, smaller than a planet.
- 15. - a streak of light caused by a rock burning up in the earth's atmosphere
- 17. - the path one objects take as it revolves around another