Please go over, please go over for another hour or two. :-)
@science2122 жыл бұрын
Good scientist.
@Biela20086 жыл бұрын
This is a brilliant lecture! Thanks for sharing it with us Dave! :)
@brandona13705 жыл бұрын
I could have easily listened to him for another three hours. I listened to this (and watched a little bit) while building an electrical cabinet for a ground track station. Today is a good day!