what lies beyond our universe?

If the big bang theory is true, then the universe is shaped like a sphere.
Everything would have exploded away from a central point at essentially the same speed. Meaning we are on the inside of a giant ball.
WHAT'S ON THE OUTSIDE???


"On the outskirts of creation, unknown, unseen "structures" are tugging on our universe like cosmic magnets, a controversial new study says.

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 presence of the extra-universal matter suggests that our universe is part of something bigger—a multiverse—and that whatever is out there is very different from the universe we know, according to study leader Alexander Kashlinsky, an astrophysicist at NASA's Goddard Space Flight Center in Maryland.

The theory could rewrite the laws of physics. Current models say the known, or visible, universe—which extends as far as light could have traveled since the big bang—is essentially the same as the rest of space-time (the three dimensions of space plus time)."

http://news.nationalgeographic.com/news/2008/11/081105-dark-flow.html