How Big Is the Universe? | Your Cosmos | Earth Lab

So we know the Universe is big, but exactly how large is it?
And if it has been constantly expanding since the Big Bang, then how big is it now? Bend your mind around the truly massive scale of our cosmos with Dr Becky Smethurst.

Best of Earth Lab: http://bit.ly/EarthLabOriginals
Best of BBC Earth: http://bit.ly/TheBestOfBBCEarthVideos


This is a channel from BBC Studios who help fund new BBC programmes. Service information and feedback: http://bbcworldwide.com/vod-fe....edback--contact-deta