• How big is the Universe?

    We don't know. We know that it's been around for at least 10 billion years, and the light in our Universe has been traveling since then. Thus, if the "edge" of the Universe exists, it is at least 10 billion light-years away from us. It's possible that the Universe is bigger than that, though — maybe even infinitely large!

    Was this helpful?

Four Areas of Science


The fault, dear Brutus,
Is not in our stars,
But in ourselves...

Julius Caesar
(I, ii, 140–141)

Featured Video

About SXS

The SXS project is a collaborative research effort involving multiple institutions. Our goal is the simulation of black holes and other extreme spacetimes to gain a better understanding of Relativity, and the physics of exotic objects in the distant cosmos.

The SXS project is supported by Canada Research Chairs, CFI, CIfAR, Compute Canada, Max Planck Society, NASA, NSERC, the NSF, Ontario MEDI, the Sherman Fairchild Foundation, and XSEDE.

Our Latest Tweet