Falcon 9

SpaceX's successful maiden flight of its Falcon Heavy rocket puts humans one step closer to Mars.
Twitterverse explodes as SpaceX Falcon 9 puts on a gobsmacking light show.
It's cool because with reusable rockets, space flight could get cheaper.
One out of four isn't bad when you're trying to land a rocket vertically.
The private company's rocket hauled 11 satellites into space, then landed back on Earth to huge congratulations.