The Hubble Space Telescope is a "Cassegrain reflector of Ritchey–Chrétien design, as are most large professional telescopes." The mirror is made with ultra-low expansion glass, according to Wikipedia. read more
The Hubble Space Telescope has won two Space Achievement Awards from the Space Foundation, for its outreach activities, in 2001 and 2010. There is a replica of the Hubble Space Telescope on the courthouse lawn in Marshfield, Missouri, the hometown of namesake Edwin P. Hubble. read more
Hubble's mirrors are made of ultra-low expansion glass and kept at a nearly constant room temperature (about 70 degrees Fahrenheit) to avoid warping. The reflecting surfaces are coated with a 3/1,000,000th-inch layer of pure aluminum and protected by a 1/1,000,000th-inch layer of magnesium fluoride. read more