Question

Will somone please explain the big bang theory to me

Answer 1

https://en.wikipedia.org/wiki/Big_Bang

Answer 2

The Big Bang Theory is the leading explanation about how the universe began. At its simplest, it talks about the universe as we know it starting with a small singularity, then inflating over the next 13.8 billion years to the cosmos that we know today.

Because current instruments don't allow astronomers to peer back at the universe's birth, much of what we understand about the Big Bang Theory comes from mathematical theory and models. Astronomers can, however, see the "echo" of the expansion through a phenomenon known as the cosmic microwave background.

The phrase "Big Bang Theory" has been popular among astrophysicists for decades, but it hit the mainstream in 2007 when a comedy show with the same name premiered on CBS. The show follows the home and academic life of several researchers (including an astrophysicist).

Answer 3

As long as you're not looking for the mathematical details, it's not as complicated as some of the people here are trying to make it out to be.

The basic premise is that physical evidence very strongly points to the idea that all matter in the universe is coming from the same point in space, and was there about 13.7 billion years ago, suggesting that the universe began with a colossal explosion. It's not an explanation of where things came from so much as the earliest event that we can confidently say happened. Where the exploding matter came from, or what happened before the Big Bang (if such a question makes sense) isn't known, and isn't part of the theory.

As for animals and people, that's covered under evolution, a different theory. (As for how it started, that's abiogenesis, something related to but not technically part of evolution.)


The technical details only establish some interesting high-energy physics stuff about what happens in a big-bang sized explosion, and also establish why it is that we're so sure this is what happened. If you're willing to trust that scientists have very good technical evidence for these theories, then you don't need to know the technical details. If you're not willing to trust that, then you'll need to know a bit of math and physics, but you can verify it for yourself provided you're educated enough - science has nothing to hide.

Answer 4

watch Stephen Hawking's Universe - The Story of Everything
it's interesting and its about universe and big bang theory :)