SpaceX's Grasshopper is a great example of a simple idea with awesome execution. The Vertical Takeoff Vertical Landing (VTVL) craft goes up, and it goes down. That's about all it does, but when you consider the fact that it goes up over 800 feet in the air, hangs out for a little while, and then gently sets itself back down on the landing pad like nothing ever happened...well, we're pretty impressed, anyway.

After a jarring last-second abortion on Saturday which was later blamed on a faulty engine valve, the SpaceX's rocket launch has been rescheduled to take place in the wee morning hours on Tuesday, May 22nd at 3:44 am Eastern Time. If you're interested enough to be awake at that time of day, you can watch the (hopefully successful already) launch on the livestream above. Until then, the feed will be playing various videos from NASA TV that you can check out. The upside is that those videos will definitely be happening. The downside? They don't necessarily include real-time footage of jets of flame. You'll have to wake up early to catch that.