Term
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Definition
| Period in the BBT that's a mystery partly because we lack a quantum theory of gravity |
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Term
| The Grand Unification Epoch |
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Definition
| Period in BBT where forces except gravity are unified |
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Term
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Definition
| Period in BBT when the universe expands rapidly from smaller than a proton to bigger than a melon - suported experimentally |
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Term
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Definition
| Period in BBT where weak and electromagnetic forces act as one |
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Term
| The Quark, Hadron, and Lepton Epoch |
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Definition
| Period in BBT; What we think of as "normal" elementary particles form and survive |
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Term
| Photons, Nucleosynthesis, and the Cosmic Background Radiation |
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Definition
| Period of BBT; Atoms form (Hydrogen and Helium) and cosmic background radiation "decouples" from matter |
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Term
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Definition
| Period in BBT in which atoms exist but stars don't |
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Term
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Definition
| Period in BBT; Stars form - Quantum fluctuations at the time of inflation determines the distribution of matter int he univers. Denser areas are where stars will form. Gravity is the major large-scale force. |
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Term
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Definition
1. Planck Epoch
2. Grand Unification Epoch
3. Inflationary Epoch
4. Elecroweak Epoch
5. Quark, Hadron, Lepton Epoch
6. Photons, Nucleosynthesis and Cosmic Background Radiation
7. Dark Ages
8. "Modern" Era |
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Term
| Sun's position in the Milky Way |
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Definition
| in the disk, 2/3 out fromt he center |
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Term
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Definition
How long it takes the sun to go around the Milky way once
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Term
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Definition
| contains Globular clusters, is spherical in shape, contains pop. II stars and very little interstellar gas and dust |
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Term
| Galactic disk (of Milky Way) |
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Definition
| flattened shape, spiral arms, both pop I and pop II stars, interstellar gas, dust, and pop I stars associated with spiral arms. |
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Term
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Definition
| Center of the galaxy, football shape, pop II stars, little gas and dust, supermassive black hole at the center. |
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Term
| Three major types of galaxies (in Hubble Classification scheme) |
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Definition
| Elliptical, Spiral/Barred Spiral, Irregular |
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Term
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Definition
| How to measure distance within the solar system |
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Term
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Definition
| How to measure distance to nearby stars |
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Term
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Definition
| How to measure distance in the Milky Way |
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Term
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Definition
| Used to measure distance to nearby glaxies |
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Term
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Definition
| How to measure distance of galaxy clusters (Tully-Fisher relation is a phrase that might be associated with this...) |
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