This is 'The Preciousness Of Time',a tribute to Stephen Hawking created by John D. Boswell (aka MelodySheep) using the words of Hawking's 'Can It Be Done' speech along with video of the late distinguished theoretical physicist and some space imagery. I thought it was a very fitting and touching tribute. perhaps not as fitting and touching as my tribute, but I really admired the man. "You built a shrine in the seat of a mobility scooter." We all mourn in our on ways.
Keep going for the video.
Source: geekologie.com