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5 Cards in this Set
- Front
- Back
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coma
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when ice and frozen gases begin to vaporize releasing voth grains of dust and evaporated ices these materials form a large hazy head around the comet called a coma coma grows larger with increased vaporization hundreds of kilometers across coma reflects sunlight producing its own light 1.5au away sun
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head
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the nucleus and coma together are called the head of the comet
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halo
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large cloud of invisible hydrogen gas surrounds the head and this hydrogen halo may be hundreds of thousands of kilometers across
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tail
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as comet nears the sun the solar wind and solar radiation ionize gases and push particles from the coma pushing both into the visible tail of the comet
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dust/visible refleted sunlight
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ionized gases are pushed into the tail by magnetic fields carried by solar wind
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