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There’s an interesting story over at Universe Today, asking if a recent comet hit caused an explosion on the Sun:

This amazing video from the SOHO mission (Solar and Heliospheric Observatory) shows a sun-diving comet hitting the solar surface on October 1, 2011 and unexpectedly a huge explosion occurs shortly after. Are the two events related? Probably not, but solar scientists don’t know for sure. The region where the CME originated was on the opposite side of the Sun from the comet hit, so that is very great distance. Scientists say there is no known mechanism for comets to trigger a CME.

Seeing this video I was immediately reminded of a blog entry that Jameske posted many years ago here at the Grail, titled “Comet Vomit“, in which he linked to a number of videos showing just these sorts of strange interactions between comets and the Sun:

According to Fred Whipple, from whom the dirty snowball comet theory originated, comets are composed of a nucleus usually around 5 to 10 Km in diameter, irregular in shape, and made of a loose agglomeration of ice, rock and hydrocarbons. The nucleus is surrounded by a diffuse atmosphere of material called a coma that can expand to up to 250000 km in diameter on close approach to the sun to form little more than vacuum, and they have highly elliptical orbits.

…Given the above it follows that there is absolutely no connection whatsoever between this comet and the sun, and this comet and the sun, and this comet and the sun, and this comet and the sun, and this comet and the sun, and this comet and the sun.

Finding patterns in coincidences, or is this some genuine, as yet unknown interaction between comets and our star? I look forward to seeing future scientific research into this fascinating little mystery…

Update: Some critical comments about the possibility of a connection from Phil ‘Bad Astronomy’ Plait and at the Sungrazing Comets website. Also this video from the Bad Astronomer: