Dark Matter & Dark Energy the Invisible Universe - BBC Science Documentary Discovery Channel

Dark Matter & Dark Energy the Invisible Universe - BBC Science Documentary Discovery Channel Dark Matter & Dark Energy the Invisible Universe - BBC Science Documentary Discovery Channel Subscribe: https://www.youtube.com/channel/UCWd9r8-8HJVHmDESq_Xob6w?sub_confirmation=1 Facebook: https://www.facebook.com/pages/Discovery-Documentary/809030925843478 Twitter: https://twitter.com/HdDocs Video Rating: / 5