The Hubble Heritage: A Legacy of Images from Deep Spacebr Gresham College - Museum of Londonbr A lecture to coincide with the 400th anniversary of the first use of a telescope to observe the heavens by Galileo Galilei in 1609.The lecture charts the development of optical telescopes since then, the subtle ideas that are greatly improving their performance and how they are bringing ever-further parts of the universe within our reach.