Across
- 2. bulge: Bar like shape where arms are attached
- 7. 2 Stars: Found in the halo, bulge and contain even smaller traces of heavy elements
- 8. arms: Dislike shape with a spiral bulge
- 12. stars: Located in the giant branch HRD and pulsate in brightness because of expansion
Down
- 1. gravitationally bound system of stars stellar remnants instellular gas, dust, and dark matter
- 3. an alternative universe
- 4. 1 Stars: In disk and arms have small amounts of heavy elements
- 5. Massive Black Hole: Largest type of black hole with massive of quarters of billions
- 6. spherical region where globular clusters are located
- 8. Density Wave: Has spiral regions of alternating density, which rotate as a rigid pattern
- 9. Light year
- 10. Lyrae variables: are stars that have periods of pulsation between 1.5 hours to 1.2 days
- 11. variables: pulsation dates between 1-100 days