The Cosmos: A Spacetime Odyssey episodes shown here are available by hulu to US users on desktop computers. You can watch episodes on mobile devices using the FOX NOW App [iOS] [Android]. Check the Cosmos: A Spacetime Odyssey website or @COSMOSonTV for more information and updates. There are some relevant resources below each video including students guides and a liveblog by real scientists during each episode. Reddit/r/cosmos has a very active general discussion about the series. Also check the official Cosmos App [iOS] [Android]. Enjoy the cosmos!
Resources: Student guide. Liveblog by Pale Blue Blog. Relevant PHL content: Earth: Evolution of a Habitable Planet.