The greatest thing about PBS Space Time and Matt (previous host was pretty good too) is it's not dumbed down or watered down and only the smallest of layperson explainers are given.

It's "keep up or fall behind", almost like sitting in a college level astrophysics class but more entertaining at times.

But sometimes on some topics I have to watch it a dozen times to fully grasp the concepts and the math at some points is beyond me. Some days my brain is just not working well enough (which makes youtube the wrong place for them but I save them to loop later).

Maybe my favorite part is I love it when he starts breaking out the Penrose Diagrams.