Across
- 1. The number of protons in a nucleus
- 4. what is the energy that is released when nuclear fusion
- 5. the wavelength of the light is stretched, so the light is seen as 'shifted' towards the red part of the spectrum
- 7. a negative charge
- 8. the process by which two light elements to create a heavier element
- 10. in what universe do we live in?
- 12. the other scientist who discovered CMB
- 13. A positive
- 14. the earth was created 13.7 ____ years ago
- 15. one of the scientist who discovered CMB radiation
Down
- 2. Cosmic microwave background radiation
- 3. how the earth came to be
- 6. the total mass of particles of matter in an atom,
- 9. one of the most abundant elements in our universe other than helium
- 11. a neutral charge