In the last 10 days astronomers have counted at least 25 comets on the NASA SOHO Spacecraft, plunging into the Sun. It could mean a larger one ahead.

These comets could be part of a larger comet, according to astronomers. The comet may come without notice, much like the cosmic visitor named Comet Ikeya-Seki in 1965, which was seen in broad daylight and came without warning.

One candidate would be the newly discovered Comet 2010 X1 Elenin, which comes very close to our planet in the Fall of 2011. The comet will be so bright you can see it with the unaided eye even in a small city.