Is the Big Bang infinite?

In the standard ΛCDM model of the Big Bang, the universe is infinite and has always been such. The Big Bang singularity happened everywhere, in the sense that far back enough in time, the density diverges to infinity at every place.

Was the universe infinite before the Big Bang?

It’s possible that before the Big Bang, the universe was an infinite stretch of an ultrahot, dense material, persisting in a steady state until, for some reason, the Big Bang occured. This extra-dense universe may have been governed by quantum mechanics, the physics of the extremely small scale, Carroll said.

Was the Big Bang a single point?

The big bang is how astronomers explain the way the universe began. It is the idea that the universe began as just a single point, then expanded and stretched to grow as large as it is right now—and it is still stretching!

Did the Big Bang singularity happen everywhere in the universe?

The Big Bang singularity happened everywhere, in the sense that far back enough in time, the density diverges to infinity at every place. But this is just a particular model–it assumes that the universe if spatially flat and is globally homogeneous and isotropic.

What is the Big Bang?

When physicists or cosmologists or astrophysicists speak about “the Big Bang” they mean “the era of Big Bang cosmology” which is a multi-billion year era where the evolution of the Universe is described by the Friedmann-Robertson-Walker-LeMaitre metric.

Is the universe finite or infinite?

First, it’s still possible the universe is finite. All we know for sure (mostly for sure) is that it’s bigger than we can observe, essentially because the farthest edges of the universe we can see don’t look like edges. The observable universe is still huge, but it has limits.

What if the Big Bang never existed?

Answer by Jay Wacker, researcher in particle physics and cosmology, on Quora: The Big Bang doesn’t exist and it never existed, nor do cosmologists believe it to have existed. The Big Bang is a point in time defined by a mathematical extrapolation. An analogy is knowing that the rate of climb for a plane is 700 feet per second.