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UNIVERSE
ASTRO CH.4
Term | Definition |
---|---|
big bang | the initial explosion that resulted in the formation and expansion of the universe |
Hubble's Law | the observation that the farther away a galaxy is, the faster it is moving away |
solar nebula | a large cloud of gas and dust, such as the one that formed our solar system |
inner planets | Mercury, Venus, Earth, Mars |
outer planets | Jupiter, Saturn, Uranus, Neptune |
universe | consists of billions of galaxies |