With the right hardware you can “generate” or earn coins. This hardware is sent specific blocks of information on which a calculation and / or check must be performed. After this operation has been completed, the result will be sent back and you will receive a certain amount of money (mining fee). How high this amount saves per type of currency for which the calculation has been made and the rate of that currency. You often talk about pennies, but many little ones make 1 big one.
When a coin goes to the moon, or is mooning, it means that the value of the coin is rising considerably. And by big I don’t mean a few percent per day, but several percent per hour. Since the moon is very high for us humans on the earth, may it be clear where this term comes from.