You’ve probably read about how the Universe is expanding, and has been expanding since the beginning of time.
Because if the Universe is expanding, what exactly is it expanding into? As the video above explains, the laws of physics as we know them wouldn’t necessarily apply in other universes.
“For each one of these basic constants, it’s as if the laws of physics randomly rolled the dice, and came up with our Universe,” says Cain. “Maybe in another universe, the force of gravity is repulsive, or green, or spawns unicorns.”
For a universe to form with the right combination of physical laws to allow for life to evolve, it’s a monkeys and type writers situation – roll the dice an infinite number of times, and you’ll eventually get it right.
So let’s say there are multiple universes – what if our Universe actually expanded so close to a neighboring universe, it bumped into it? Turns out, signs of such a ‘cosmic bruise’ do exist, and scientists have been trying to explain them for decades.
There’s one region in our Universe that’s so confounding, scientists have literally called it the Axis of Evil.