Across
- 5. instrument that collects electromagnetic radiation from the sky and concentrates it for better viewing
- 8. space and all energy and matter in it
- 9. smaller bodies that orbit a planet
- 10. large celestial body that is composed of dust and emits light
- 12. collection of 8 planets in the milkway
- 13. name of galaxy that is Earth's home
- 14. a large cloud of gas and dust in interstellar space
- 16. the distance that light takes to travel a year; 9.46 trillion kilometers
Down
- 1. happens when something gets sucked into a black hole
- 2. name of the closest spiral galaxy to the Milky Way
- 3. objects in space that range in size from dust grains to small asteroids
- 4. spherical body that orbits a sun
- 6. the study of the universe
- 7. recognizable star pattern
- 11. collection of stars, dust, and gas bound together by gravity
- 15. a huge object that is so massive and dense that light can't even escape