Laser-powered rockets could be our pipeline to outer space

It's an awesome solution to a simple problem: you need ridiculous amounts of fuel to get a rocket into orbit. However, if the rocket fuel was considerably hotter, it would be more energetic, and you'd need way less fuel to launch the rocket. So why don't we just shoot powerful lasers at rockets? It's so insane that it… » 2/15/11 12:45pm 2/15/11 12:45pm