ThePittman
"Pitt Happens"
Originally posted by roughrider
Planets have gravitational fields, magma cores etc. An Asteroid is a piece of loose rock floating in zero gravity. You tell me which is easier to break apart, physically.
Actually asteroids are composed of mostly rock and metal ore and are extremely dense and any object of mass has a gravitational field, the larger and denser the mass the greater the field. The Earth with it molten core basically wants to explode but the mass of the Earth and the gravitational force keeps it form doing so, if you disrupt this balance it very likely that it will explode.