If there was ever an arguement for the power of social media, Colonel Chris Hadfield proves it. The Canadian astronaut, and the first Canadian to walk in space, is currently floating aboard the ISS as a flight engineer on Expedition 34, preparing to be Commander of Expedition 35. Looking down from above, Hadfield takes awe-inspiring photographs of Earth and its abstract wonders and tweets them from space every single day. You can follow his daily images and musings on his Tumblr, Facebook and Twitter. He also shares a variety of recordings from space on Soundcloud. Colonel, you are the future.