Board Thread:Questions and Answers/@comment-34954086-20120922085545/@comment-4928331-20130218040500

Hyperspace, Magic, and Portals provide a great deal of handwaving. As you stated yourself, this is a physics thread, and so must we deal with the vagaries of what is physically possible.

A note about the Earth destruction. Mongul did say it will mercifully end Earth in a matter of minutes. Having the Earth shake itself apart looks likely to take more than that, at least :P