Across
- 2. a small icy object that emits a trail of gas
- 5. planets spinning around a star
- 9. a region of space were gravity is so strong light cannot escape
- 11. a cosmic cloud in which stars are born
- 12. a group of stars that make a shape
Down
- 1. a small rock floating in outer space
- 3. a large empty part of space
- 4. a bunch of stars and planets spinning around a black hole
- 6. the explosion made from a collapsing star
- 7. a luminous ball of gas
- 8. a large, round, astronomical body
- 10. a super bright galactic nucleus powered by a black hole