Term
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Definition
| Is a light-year a unit of time, distance, or speed? |
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Term
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Definition
| What type of reactions provides fuel for stars? |
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Term
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Definition
| What physical property of a star most directly determines the star's color? |
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Term
| neutron star and black hole |
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Definition
| Name 2 objects that remain after a supernova. |
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Term
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Definition
| What do you call a collection of clusters bound together by gravity? |
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Term
| spiral, elliptical, irregular |
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Definition
| What are the 3 main types of galaxies? |
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Term
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Definition
| What type of galaxy is the Milky Way galaxy? |
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Term
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Definition
| What color do elliptical galaxies tend to be? Why? |
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Term
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Definition
| What would happen to the universe if it was shrinking, and continued to shrink for a very long time? |
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Term
| black holes and brown dwarfs |
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Definition
| Name 2 examples of dark matter. |
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Term
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Definition
| List 3 things found in the universe. |
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Term
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Definition
| A small, hot, dim star that is the leftover center of an old star |
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Term
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Definition
| an object so massive and dense that not even light can escape its gravity |
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Term
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Definition
| a gigantic explosion in which a massive star collapses and throws its outer layers in space |
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Term
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Definition
| quasi-stellar radio sources |
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Term
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Definition
| a group of stars or galaxies bound by gravity |
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Term
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Definition
| the distance that light travels in one year |
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Term
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Definition
| the sum of all space, matter, and energy that exist in the past and that will exist in the future |
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Term
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Definition
| a large celestial body that is composed of gas and that emits light |
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Term
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Definition
| a large reddish star late in its life cycle |
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Term
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Definition
| the theory that all matter and energy in the universe was compressed into an extremely small volume that exploded and began expanding in all directions |
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Term
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Definition
| a collection of stars, dust, and gas bound together by gravity |
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Term
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Definition
| the gas and dust located between the stars in a galaxy |
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Term
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Definition
| an apparent shift toward longer wavelengths of light caused when a luminous object moves away from the observer |
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Term
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Definition
| an apparent shift toward shorter wavelengths of light caused when a luminous object moves toward the observer |
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