Trading bitcoin/ethereum, what is a golden/death cross? A moving average analysis on today's price

Market is moving fast and I am holding my long from two days ago, but I have been crunching these short videos like nobody's business. This one is also going to be on the moving averages like the last one. More specifically, I will be analyzing the golden cross and death cross of a moving average as a signal for entry. I want to make it less than 5minute so you can move on with your day and learn something new if you haven't already.

If you've missed the last video on the moving average video to analyze trends on bitcoin/e-t-h prices, you can find it here.