Across
- 3. Another way the universe will end
- 4. one of the ways the world will end
- 6. Speed of light
- 8. we are still in this era now
- 10. the change in frequency Bigbangtheory theory on how the universe formed
- 11. can be hot or cold
- 12. make up an object
- 13. displacement of the spectrum
Down
- 1. remnants of the big bang
- 2. we launched this in 1990
- 5. The first era
- 7. seconds, minutes, hours
- 9. opposite of light matter
- 10. substance of the mass