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Definition
| Sun's interior, nuclear fusion occurs here, producing a ton of energy |
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| hydrogen atoms join together to form helium, releasing huge amounts of energy |
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| region of the sun where there is very tightly packed gas and energy is being transferred in the form of electromagnetic radiation |
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| outermost layer of sun's interior. like a mixing zone, where the hot gases rise, cool, and sink |
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| the visible layer of the sun, the inner layer of the sun's atmosphere |
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| the middle layer of the sun's atmosphere, gives off a reddish glow |
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| earth is at the center of the revolving planets and stars |
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| Earth and the other planets revolve around the sun |
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| outer layer of the sun's atmosphere, can be seen during a solar eclipse |
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| electrically charged particles that stream off the corona |
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| areas on the sun that are much cooler than the surrounding areas |
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| reddish loops of gas that extend from one sunspot to the next |
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| An erruption of gas from the sun's surface that occurs when the loops in sunspot regions suddenly connect. |
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| small, dense, rocky planets |
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| the trapping of heat by the atmosphere |
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| planets that are fairly large in size and do not have solid surfaces |
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| loose collections of ice, dust, and small rocky particles whose orbits are usually very long, narrow ellipses |
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| the fuzzy outer layer of a comet |
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| The solid inner core of a comet |
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| doughnut-shaped region that extends beyond Neptun's orbit |
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| A spherical region of comets that surround the solar system out to more than 1000 times the distance between Pluto and the sun |
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| Rocky objects revolving around the sun that are too small and numerous to be considered planets |
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| a streak of light in the sky produced by the burning of a meteroid in Earth's atmosphere |
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| A meteoroid that passes through the atmosphere and hits Earth's surface |
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| a chunk of rock or dust in space |
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| An oval shape, which may be elongated or nearly circular |
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