Aristotle's Arguments Against the Possibility of Void

Aristotle says there's no such thing as void. He also argues that the speed of something in void would be infinite. So you might say, there isn't even non-being outside the cosmos. That's how much nothing there isoutside the cosmos. There's not even nothing, as it were. I leave to you as a homework assignment to figure out why this argument is wrong - answers on a postcard.