Across
- 3. a system made up of millions or billions of stars
- 4. a group of stars which are gravitationally bound
- 6. a spherical chunk of rock or gas
- 8. a set of stars
- 9. a cloud of gas and dust that is either an indistinct bright patch or a dark silhouette against other luminous matter
Down
- 1. an object used to see far-away objects
- 2. a galaxy that has an irregular shape
- 5. a big explosion resembling the death of an old star
- 7. a big ball of hot gas and dust that was generated from a dust cloud
- 10. hole an intense gravitational field that now matter or radiation can escape