Across
- 2. Our solar system has this
- 4. They are this many times brighter than the sun
- 5. Active young galaxies with giant black holes in the centers
- 6. This spirals towards the black holes, heats up and shines brightly
- 7. These look like balls or ovals
- 10. star systems with two stars
Down
- 1. These are typically smaller than others
- 3. The milky way is an example of this
- 8. A huge group of single stars, star systems, star clusters, dust, and gas bound together by gravity
- 9. A group of two or more stars