February 21, 1998 (25) Tiger years the first month, the U.S. astronaut successful transformation of the Hubble Space Telescope and a smooth return to the ground. 11 am

1998, the United States seven astronauts aboard "Discovery" space shuttle launch, the Hubble Space Telescope Space Flight 7 years to transform. The Hubble telescope has been launched into space in 1990, nearly 1.6 billion kilometers in space flight for more than 2,000 scientists from more than 20 countries, up to 11 million times the astronomical observations. "Hubble" remarkable achievements, but riddled with problems, needs an overhaul. In the early morning of February 13, the U.S. astronauts from space "Abstract" Hubble telescope to be placed on the platform of the space shuttle load compartment. In the middle of the night to the early morning of the 18th, the 13th, the astronauts conducted five spacewalks to replace 11 kinds of new equipment, including the near-infrared camera and multi-target spectrometer and the Space Telescope image spectrograph telescope "Hubble" and repair the telescope on the part of the peeling insulation layer. In the early morning of February 19, the astronauts will transform a new Hubble telescope to be re-released into space, this "vision" better "space eyes" will help mankind learn more about the mysteries of the universe . The U.S. astronauts
2 21 am, the successful completion of the repair work of the Hubble Telescope smooth return to the ground.