Across
- 5. A loosely shaped cluster with less than a hundred stars.
- 6. A large-scale group of stars, gas, and dust
- 7. A cycle that ranges from 1-100 days.
Down
- 1. Has a spherical shape and can contain 1M stars.
- 2. Nebulas collapse and form a ________
- 3. A typical galaxy that has a diameter of 100,000 light-years.
- 4. A giant star that brightens and fades in a regular pattern.