Quote:
Originally Posted by Zenemis
Well, it wouldn't be the first time rocks have exploded, but seeing as it's a space asteroid and presumably wouldn't contain much moisture, I can't think of a sensible explanation for the explosion.
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When you heat up mater even rocks it expands heat it up rapidly and it explodes. You don't need water to have an explosion. The asteroid erupted like a volcano with the material in the center being rapidly heated up rapidly forcing the out side away.