How Astronomers Study the Edge of the Universe
It’s a fascinating question, “How far can you see in the universe?”
As far as we know the universe is not infinite, there's actually a place where it ends. While astronomers have never actually seen the edge of the universe, they know it's out there. View the video at Business Insider as Robbert Dijkgraaf, Institute Director and Leon Levy Professor, explains how scientists know there's a limit to the universe.