👉 Hubble, also known as Hubble Space Telescope, is a space telescope operated by NASA that was launched in 1990. It is located at the European Space Agency's (ESA) Fraunhofer Institute for Space Technology in Tübingen, Germany. The telescope measures over 20 feet (6 meters) in diameter and has a primary mirror of 3.54 meters (12 feet) in diameter. It was designed to observe ultraviolet light from