The Big Bang should be understood as an expansion of space and time from a small state rather than an explosion.

“the right answer is it's an expansion of space and time from something small to something big it was not an explosion”

The Big Bang is not time equals zero, and scientists do not know what caused the universe to begin expanding.

“Most people think the Big Bang is time equals zero. That's wrong. That's absolutely wrong. Scientists don't think the Big Bang is time equals zero. We don't think that's when there was a singularity or perhaps when there was a pre-existing universe, which is now another theory we can discuss.”

The speaker asserts that the Cosmic Microwave Background serves as evidence that the Big Bang occurred.

“discovering this Cosmic microwave background also it's a great proof for that the Big Bang did happen even though they're all already many things evidence for it”

The Big Bang might be better described as a cyclic or bouncing universe where space existed before, during, and after the expansion event.

“maybe what we thought was the big bang was really a big bounce that the universe went through a period of contraction and then bounced to expansion so that space would not have had a created moment but would have existed before during and after.”

The Big Bang theory is a powerful and accurate model because it makes high-precision predictions that have been confirmed by observation.

“the fact that we have all these crazy predictions that have all you know the high precision have come to fruition so i i get on that because the good doctor said observations right everything we observe shows that the universe is not going to collapse but the big bang has gone even further”