Is there more than one universe? In this visually rich, action-packed talk, Brian Greene shows how the unanswered questions of physics (starting with a big one: What caused the Big Bang?) have led to the theory that our own universe is just one of many in the “multiverse.”

Crazy Circle Illusion
Here is another crazy circle illusion by Brusspup. Look at those dots! These eight dots seem to be doing a circular movement!