| A | B |
|---|
| The Big Bang Theory | Is the theory that says our Universe was born 13.7 billion years ago with an explosion. The universe began expanding evenly in all directions. |
| CMB | Cosmic Microwave Background Radiation. This is evidence that the Big Bang must have occurred. |
| Penzias and Wilson | Discovered CMB in 1963 |
| Edwin Hubble | In the 1920's, he discovered that the Universe is expanding and that there are galaxies beyond ours. |
| Cores of stars | Where fusion takes place to form the light elements. # 1-26 |
| Stellar Explosions | Supernovae. This is where and when the heavy elements get fused. Elements # 27-103 |
| Big Bang Dust | What produced the first elements of H and He that formed around 380,000 years after the BB. |
| Sir Frederick Hoyle | Determined that the elements were formed in the core of stars and from stellar explosions |
| 13.7 Billion Years | Age of the Universe |
| 5 Billion years | Date when our Solar System began to form |
| Nebular Theory | Theory that describes the formation of the Solar System |
| Immanuel Kant | Scientist who formulated the Nebular theory in 1755 |
| RHIC | Relativistic Heavy Ion Collider- the tool that helps scientists understand what the Universe must have been like at the begiining |
| WMAP | Wilkinson Microwave Anisotropy Probe launched in 1991 to explain the density differences in space |
| Hubble Telescope | The telescope that helped us understand What elements are created during Supernova explosions using its spectrscope |
| Accretion | The collapsing, condensing, swirling, gravity induced, accumulating processs that created the planets, the sun-our solar system |
| Doppler effect | The name given to the apparent shift of light or sound waves that tells us if an object is coming towards us (blue shifted) or away from us (red shifted) |
| Inflation Theory | Says that after the Big Bang Matter in the Universe is expanding evenly throughout |
| Big Crunch Theory | Theory that says the Universe will one day stop expanding, reverse its direction and eventually implode or collapse back in on itself. This is no longer the conventional thought |
| Universe | The area of all space containing Nebulae, galaxies and solar systems |
| 4.5-4.6 BYO | Age of our Solar System |
| Giant Impact Theory | Theory that the Moon was formed out of the debris left over from a collision between the Earth and a body the size of Mars around 4.4 BYA. Proposed by William K. Hartmann 1975 |
