Urgent! 3 Days of Darkness

reply to post by GrassyKnoll


It's common for a comet's coma to be almost as large as the Sun -- or even larger than the Sun.

However, a comet's coma is extremely thin and tenuous, and most of that coma is a virtual vacuum. There is no way a comet's coma would block the Sun -- not even a coma larger than the Sun.