This is part 5 of a 5 part episode. To watch the full show go to my channel (Zuke696) then go to my Playlist, find the show then click Play All - Hubble's Heritage - In 1929, astronomer Edwin Hubble made one of the greatest discoveries in the history of science -- the expansion of the universe. To honor this king of cosmology, an orbiting observatory named the Hubble Space Telescope was launched in 1990 after years of research and delay. Hubble's Heritage takes a closer look at this instrument, from its beginning as a flawed engineering nightmare to its evolution, through corrective optics, into humanity's eyes on the universe. Viewers see some of the astonishing images captured by the Hubble Space Telescope through the years and learn of their significance to astronomers. Designers of the next generation of space telescopes explain the challenges that must be met before Hubble's successors can reveal more mysteries of the universe.