[tyke]

Asteroids have a way of exploding when they approach a planet. They have an electrical charge at their core which fails to to equalize rapidly enough with the different charge of a planet which creates internal stresses that cause them to become bolides.

Er, no.

That is just "Electric Universe" bunk.

Comets break up all the time because they are simply dirty snowballs with little structural strength, and many asteroids are little more than piles of rubble stuck together.

There is no reason to make up stuff about electric charges to explain processes that are the result of simple mechanics.

[johnmark7]

Er, yes. If you know nothing about plasma physics save yourself the trouble of commenting.

And while you're at it, lets see a single dirty snowball in fact rather than theory.

If you won't actually examine the evidence, get lost.