Bad news, guys. There’s a limit to humanity. Even if we had the technology for interstellar space travel, we still wouldn’t be able to see most of the observable universe because we’re actually limited to only being able to go to a hundredth billionth of a percent of it. We’re stuck within our local galaxy group. That’s sort of depressing! But why is there a limit anyway? Kurzgesagt explains how it has to do with dark energy, and the nature of nothing, and how only so many things in the universe are gravitationally bound to us.