Thread: Summaries of all known theories about the origin of the universe

Hello. Could someone please explain in layman's terms the theories that you know of regarding the beginning of the universe (I have heard there are many). Feel free to talk about any theories that you know of, and please try to be detailed but also keep in mind that I am not a physics major (so try to explain the theories in a way that I will understand). Feel free to explain the Big Bang Theory as you see it, and also any other theories that you are aware of (the Big Bang Theory is the only one that I know about). Also, if you just want to talk about one particular theory to add to the discussion, feel free Also, feel free to state which theory you think is the most correct if you'd like. Thank you for your time.

I strongly suggest you have a browse through this forum and the Astronomy forum. There are quite a few relevant threads. If anything perplexes or confuses you, ask a specific question.

Originally Posted by curious01

Hello. Could someone please explain in layman's terms the theories that you know of regarding the beginning of the universe (I have heard there are many).

As far as I know, they are all variations of the same basic idea:

In the Big Bang theory, the universe began as very hot, small, and dense, with no stars, atoms, form, or structure (called a "singularity"). Then about 14 billion years ago, space expanded very quickly (thus the name "Big Bang"), resulting in the formation of atoms, which eventually lead to the creation of stars and galaxies. The universe is still expanding today, but getting colder as well.

As a whole, space is growing and the temperature is falling as time passes. Cosmology is the name given to how the universe began and how it has developed. Scientists that study cosmology agree the Big Bang theory matches what they have observed so far.

Big Bang - Wikipedia, the free encyclopedia

Hey, thank you both for your help and advice. And sounds good, I'll take a look around the forum and see what I can find