Across
- 2. The very large, diffuse area around a galaxy that contains globular clusters and dark matter
- 4. The first person to realize that the portion of the Milky Way that we can see from Earth was made of countless individual stars
- 5. Young, bright star clusters primarily found in the spiral arms of galaxies
- 6. The person who discovered there are other galaxies outside of the Milky Way
- 8. A very, very bright young galaxy powered by the supermassive black hole at its center
- 10. Galaxies that don't belong to any other group get thrown into this group. No predictable shape or star populations
- 12. The variable stars that Henrietta Swan Leavitt worked to understand. Used to measure cosmic distances
- 15. The type of spiral galaxy the Milky Way is
- 16. The most famous open star cluster. Called 'Subaru' in Japanese
- 17. The name for the central area of a galaxy
Down
- 1. How long it takes for a star to complete one orbit around the entire galaxy
- 3. The nearest large galaxy to us. Due to collide with us in a few billion years
- 7. The object at the center of every galaxy
- 9. Equal to 3.26 light years
- 11. Oblong galaxies with very little dust and gas. Primarily made of old stars
- 13. The area of a spiral galaxy made up of the spiral arms
- 14. A vast collection of stars, gas, dust, dark matter, and other things all held together by gravity