Across
- 3. This period of the early Universe helps to explain why the Universe is flat
- 7. The material surrounding an individual galaxy is known as the __________ medium
- 8. If the Universe has negative curvature, it will end in a Big ______
- 9. A collection of many clusters of galaxies connected together by filaments is a _____cluster
- 10. This era during the formation of the early Universe is characterized by having three unified forces and gravity decoupled (acronym)
- 11. The Large and Small Magellanic Clouds create _____ streams from their past interactions with the Milky Way
- 14. This era during the formation of the early Universe involves the first formation of complete atoms
- 16. To find and measure dark matter in elliptical galaxies we measure the average orbital velocity and compare it the ____ velocity of the ordinary matter
- 17. The Universe has this type of curvature
- 18. If the Universe has positive curvature, it will end in a Big ______
- 19. This law allows us to measure the distance to very distant galaxies by measuring their recessional velocity
Down
- 1. This era during the formation of the early Universe is characterized with all four forces being combined as one
- 2. This is the name for the overall structure of the cosmos (two words)
- 4. Dark ______ is an unknown material that makes up around 25% of the Universe's material
- 5. This type of galaxy has a galactic disk, central bulge, and stellar halo structure
- 6. Dark ______ is an unknown material that makes up around 70% of the Universe's material
- 7. A collection of galaxies with hundreds to thousands of members is a galaxy ______
- 12. These types of galaxies have material actively falling into their supermassive blackhole (acronym)
- 13. The Cosmic _________ Background is the blackbody radiation of the Universe
- 15. This type of galaxy is triaxial in shape and contains mostly older, redder stars