Across
- 3. an orbital disc consisting of gas, stars, and planets.
- 6. a star with its orbiting planets and objects.
- 7. an area with virtually no mass.
- 8. contains all stars, galaxies, and black holes.
Down
- 1. a large group of galaxies.
- 2. a group of galaxies.
- 4. an object that orbits a star without sharing its orbit.
- 5. an object that permanently orbits a planet.