Across
- 3. thought to be 27% of the universe
- 5. leftover radiation from Big Bang expansion
- 10. contains all of space and time
- 11. causes the phenomenon of redshift
- 12. can be thought of as anti-gravity
Down
- 1. Energy cannot be created or destroyed
- 2. self-luminous celestial body
- 4. Matter can change between states, but cannot be created or destroyed
- 6. the gradual growth of an object due to the accumulation of layers
- 7. the force between objects in which larger objects pull smaller objects towards them.
- 8. A theory of how the universe expanded from an initial state of high density and temperature
- 9. Can be used to measure how far away a galaxy is.