In 1995, a machine called Hubble peered into a small patch of empty sky for ten days straight. For the scientists on Earth, it was a huge, expensive gamble. What emerged from Hubble's patient gaze was a glittering array of 3,000 galaxies and billions of years of history staring right back at us. Made with thanks to the Space Telescope Science Institute, Baltimore. Subscribe to BBC Global: For the latest news, analysis and features visit: #bbc #space #history