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Vocab Quarter 4
| Term | Definition |
|---|---|
| Light Year | distance that light travels in a year. |
| Astronomical Unit | 150,000,000 kilometers |
| Universe | All of space and everything in it |
| Galaxy | group of stars |
| Star | Ball of gas |
| Planet | sphere like object that orbits the Sun. |
| Dwarf Planets | smaller version of a planet |
| Moons | natural satellites. |
| Asteroids | rocky bodies |
| Comet | loose ball of ice and rock |
| Spectra | visible light |
| Wavelength | electromagnetic wave-lengths |
| Hertzsprung Russell Diagram | A graph for stars |
| Big Bang Theory | Theory that the universe formed in a instant |
| Absolute Magnitude | super close or spot on |
| Apparent Magnitude | around that area |
| Sun | a big star |
| Sunspot | areas of plasma |
| Solar Flare | erupt in space. |
| Prominence | loops of plasma that are polarized. |
| Corona | white halo around the Sun |
| Photosphere | Inner Layer of Sun's atmosphere |
| Chromosphere | Middle Layer of Sun's atmosphere |
| Radiative Zone | gamma rays |
| Convective Zone | outmost layer |
| Core | enormous amount of energy |
| Rotation | spinning on axis |
| Revolution | movement of one object |