The Cosmic Engine

2. A force that was proposed to pull all heavy objects to the centre of the universe.
5. Copernicus created one of these.
7. Ancient Greek Philosopher.
9. As an object approaches the speed of light, it's mass _________.
10. This man mathematically proved the expansion of the universe.
12. An observable galaxy approximately 800000ly away from earth.
13. The process which causes protons and neutrons to fuse into a Helium nuclei.
14. What 'c' stands for in Einstein's most famous equation.
17. A theory that proposed that all light objects floated away from the centre of the universe.
18. The universe contains both ____ ______ and cold ____ ______.

1. Edwin Hubble is renowned worldwide for the discovery of the _________ of the universe.
2. A model of the universe where the earth is at the centre.
3. A theory that discusses the properties of non-accelerated pbjects that move in a straight line at constant speed.
4. A measure of the shift in frequency of a wavelength of the light divided by the rest wavelength of the light.
6. Plasma is a highly _______ state of matter.
8. A type of background radiation that exists all throughout the universe.
11. One of Einstein's popular theories.
15. Areas of high _______ in a nebula collapse to form high mass stars.
16. v=HD