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A sungrazing comet is a comet that passes
extremely close to the Sun at perihelion – sometimes within a few thousand
kilometers of the Sun’s surface. While small sungrazers can be completely
evaporated during such a close approach to the Sun, larger sungrazers can
survive many perihelion passages. However, the strong evaporation and tidal
forces they experience often lead to their fragmentation, e.g. comet ISON.
The motion of tails of sungrazers that survive perihelion (such as Comet Lovejoy) can provide solar astronomers with information about the structure of the solar corona, particularly the detailed magnetic structure.
Watch:
https://www.youtube.com/watch?v=d2TgJP46Ayw#t=30
Credit: NASA/GSVS
The motion of tails of sungrazers that survive perihelion (such as Comet Lovejoy) can provide solar astronomers with information about the structure of the solar corona, particularly the detailed magnetic structure.
Watch:
https://www.youtube.com/watch?v=d2TgJP46Ayw#t=30
Credit: NASA/GSVS
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