Across
- 3. Optical instrument designed to see distant objects
- 5. Group of galactic clusters
- 7. Largest known structure in the universe which forms part of a galactic web
- 9. A unit of distance defined as the distance light travels in one year
- 13. Celestial body with a supermassive black hole as its nucleus that feeds on surrounding material
- 14. A widely accepted explanation of how the universe came to be
Down
- 1. Celestial body with such intense gravity that nothing can escape
- 2. cloud of gas and dust known for producing stars
- 4. Grouping of hundreds or thousands of galaxies bound together by gravity
- 6. Consists of all existing matter that exists
- 8. Massive cloud of gas and dust known for producing stars
- 10. System consisting of stars, gasses, and dust held together by gravity
- 11. Vast, empty region in space with little to no forms of matter
- 12. American astronomer who is known as the “pioneer of distant stars”