Penrose's explanation of the end...
.. of the universe and the whole solution to heat death and the start of the universe* was on a... panorama I think? recently and as an astrophyicist by training I was just utterly gobsmacked.
It was so... elegant.
It's as close as I get to a religious experience and I am still getting tingles when I think about it. It's quite humbling when you realise the gap between intellects who can come up with these solutions and yourself.
Oh well, I just hope that the human race keeps churning out minds like his.
*as I understood it, and I could well be out of practice, the universe will eventually cool to absolute zero (or close enough that quantum fluctuations are the only accelerating things) at which point space and time will have no real meaning since there won't be anything to distinguish anything from anything else. At which point everywhere is basically nowhere and so could be treated as a singularity which could then explode.
I probably mangled that thoroughly after 10 years away from university and not doing physics, but I think that was the gist of it.