I just saw the last few minutes of Through the Wormhole show on dark energy. They kept saying, we have no idea what it is. I haven't been in science classes since high school (and even then I was stoned most of the time), and I've read only 2 books on science on my own: A Short History of Nearly Everything and A Briefer History of Time. But the way Einstien's theory of gravity is explained is the warping of space. Kind of like if you put a bowling ball in the middle of a trampoline it will warp it and attract other smaller objects on the trampoline to it. My question is couldn't dark energy be what's under the trampoline? If one pushes up on the trampoline, then it would make objects on the trampoline move farther apart? Thanks for answering my question here and promoting my laziness in reading the material on my own.