Posted by: Havan_IronOak
« on: February 06, 2016, 08:48:20 AM »Just watched David Butler's "Video book", How Far Away Is It for the umpteenth time.
If you consider yourself a science nerd (or an astronomy nerd in particular) or ever wondered why they call it a "Parsec" you really should watch this.
list=PLpH1IDQEoE8QWWTnWG5cK4ePCqg9W2608
If you consider yourself a science nerd (or an astronomy nerd in particular) or ever wondered why they call it a "Parsec" you really should watch this.
list=PLpH1IDQEoE8QWWTnWG5cK4ePCqg9W2608