Home Explore Glossary H Horizon Problem

Horizon Problem

A problem with the simplistic Big Bang theory having to do with the smoothness of the Universe. The Early Universe should have been very random in terms of the temperature and density of different parts of space. This randomness should not have had time to distribute itself more evenly. Yet, this is what is observed in the Universe. The theory of Inflation solves this problem.

Explore

Four Areas of Science

Relativity Gravitational Wave Astronomy Compact Objects Numerical Relativity

Inspiration

There are more things in heaven and earth...
than are dreamt of in your philosophy.

Hamlet (I, v, 166–167)

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

Twitter response: "Could not authenticate you."