Unknown structures are pulling on the universe

Everything in the known universe is said to be racing toward the massive clumps of matter at more than 2 million miles (3.2 million kilometers) an hour—a movement the researchers have dubbed dark flow... The newfound flow cannot be explained by, and is not directly related to, the expansion of the universe, though the researchers believe the two types of movement are happening at the same time.

So where are these "unknown, unseen structures" that are pulling the universe? Why, outside the universe. Not outside the Milky Way, or outside the galaxy, mind you. Outside the universe. Because apparently there is something bigger than the universe - a multiverse.

If my mind gets totally boggled, I won't be able to blog. So I'll stop here. But you can read more at the link.