In this episode, Katie Mack and John Green discuss the wonder keeping the stars apart... dark energy.Head to https://policygenius.com/crashcourse to get your free life insurance quotes and see how much you could save.This show is a production of Complexly. If you want to help keep Crash Course fr...
In this episode, Katie Mack and John Green discuss the wonder keeping the stars apart... dark energy.
Head to https://policygenius.com/crashcourse to get your free life insurance quotes and see how much you could save.
This show is a production of Complexly. If you want to help keep Crash Course free for everyone, forever, you can join our community on Patreon at http://www.patreon.com/crashcourse
See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.