Leaking Gravity
Dark energy always struck me as a rather odd idea. Now an alternative hypothesis explaining the nature of the cosmos has been released: leaking gravity.
We all know from our lessons in string theory that gravity is a very weak force in the dimensions that we can observe. (Try this: Drop something. Which force wins? The gravity pulling the object toward the earth or the electromagnetic force holding the tiny bits of floor together?) So if gravity is actually the same type of force as everything else, it is therefore acting in dimensions we cannot observe.
This leaking gravity idea says that with extreme distances, more and more of the gravity goes off into these other dimensions. And this explains why the universe is accelerating its expansion.
So why is this so much more believable to me than the dark energy theory, which says there's negative mass-energy pushing the universe apart with anti-gravity? Because I'd really like to believe in anti-gravity. That'd be cool. I got a bunch of uses for it. (Although the anti-gravity shoes might be difficult to walk in. I always end upside-down in my test-runs.)