And even if you don't think you are interested, trust me, you will be when you view these 2 talks by Jason Lisle, Ph.D.
He has a double Doctorate degree, in both Physics and Astronomy, and hence is an 'AstroPhysicist', which, just between you and me, means he knows a lot about this topic.
And, indeed he does.
Fortunately for us, though he knows a lot, he presents it in a way that is clear, understandable, interesting, and entertaining.
So do not think this is 'over your head'. It is not. You will love it and will learn a lot.
To view his presentation, consisting of Two 15 minute video segments. HERE'S THE LINK