Nick+K

Hubble Telescope ​ The Hubble Telescope was first launched in april 1990 on a mission for 20 years and 26 days. Although it is going out of service in 2014, were it will be replaced by the James Webb space telescope, it has helped people discover alot of things about our universe. media type="youtube" key="qYVmvWUmh-c" height="431" width="446"media type="youtube" key="-pA06Ck0eVs" height="428" width="507"  Basic

Space telescopes were introduced as early as 1923 but the Hubble was funded in 1970's with a proposed launch in 1983 but was delayed by budget problems and technical problems. but when finally launched the mirrior was placed wrong and it held back the telescope from its full capablity it was finally restored in 1993 it has been serviced 4 times between 1993-2002 the fifth was cancelled due to the Columbia disaster but was finally completed.

Construction

Once started diffrent departments were given diffrent projects Marshall space filght center (MSFC) was incharge of design, development and construction of it. Goddard space flight was given control of the scientific instruments and ground control center of the mission. MSFC hired a special company perkin-elmer optics to design and build the Optical Telescope Assembly and Fine Guidance Sensors for the space telescope.

Service missions

> after its finished > > it will return to earth to be displayed in the smithsonian museum
 * **The major repairs and upgrades to the satellite telescope included:**
 * A pair of new solar wings were added to Hubble. The new arrays are smaller, but 20-percent more powerful.
 * A new reaction wheel assembly was installed to help aim Hubble. The satellite has four such devices.
 * The 12-year-old telescope's power control unit (PCU) was replaced. To accomplish their chore, the crew had to power down and restart Hubble for the first time since it was placed in space by shuttle Discovery on April 25, 1990.
 * A new Advanced Camera for Surveys (ACS), about the size of a telephone booth, was installed to improve Hubble images of the cosmos by tenfold. ACS replaced the Faint Object Camera, which had been the last remaining original Hubble camera. ACS will be used remotely by astronomers on the ground to search for extra-solar planets and to explore in more detail the ancient fringes of the Universe.
 * A new cryogenic cooler and radiator, designed to chill a camera that needs extremely cold temperatures to function (-334 degrees Fahrenheit or -203 degrees Celsius), was installed. The Near Infrared Camera and Multi-Object Spectrometer (NICMOS) had gone out of service in 1999 after a small leak ruined the original cooling.