Across
- 5. an idea that is backed by a significant amount for evidence
- 6. _____ was able to observe galaxies moving away from each other
- 9. makes up 75% of the universe
- 10. the leftover radiation from the Big Bang
- 11. This theory is believed to have started about 14 billion years ago
- 12. How long after the big bang did the universe grow to be the size of a softball
Down
- 1. evidence that supports the Big Bang Theory
- 2. acts the opposite way of gravity
- 3. predicted the Big Bang Theory before there was evidence for it
- 4. evidence that supports the Big Bang Theory
- 7. Galaxies moving further apart from eachother
- 8. makes up 25% of the universe