"I imagine that even if a hyper-advanced Evil Empire wanted to vaporize a planet completely, it would be more efficient to push it off its orbit and into the su

"I imagine that even if a hyper-advanced Evil Empire wanted to vaporize a planet completely, it would be more efficient to push it off its orbit and into the sun than it would be to build a steel planet with a massive energy beam. And that's still ignoring all the other problems physics has in store for a planet-sized object that can be steered through space, enters other solar systems, and gets close enough to a planet to blow it up." That would make for a particularly funny episode of Futurama. I could see some race destroying planetary systems using big planets and gravity to sling other planets into their suns. And only the Planet Express crew could stop them --- and maybe Zapp. <Kiff sigh />