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     2002 - MSSL delivers UVOT for NASA's Swift Mission
     
    On Thursday 
     May 30th, a state-of-the-art space telescope designed and built at UCL's 
      Mullard Space Science Laboratory, 
     will be taken on a special United States Air Force flight from RAF Mildenhall 
     to NASA's Goddard Space Flight Center 
     in Maryland, Washington, DC. 
    Called the 
     UVOT (Ultra-Violet / Optical Telescope), this will be one of three telescopes 
     on a special NASA orbiting space observatory which is planned for launch 
     on a Delta II rocket next year. The observatory, called "Swift", has been 
     specially designed to find gamma-ray bursts.
    These are 
     the most explosive events in the Universe but as yet, very little is known 
     about when and why they occur. The most distant burst has been seen in a 
     galaxy about 12 billion light-years away; this explosion went off when the 
     Universe was very young. 
    Scientists 
     believe that gamma-ray bursts come from the explosions of massive stars, 
     called hypernovae, leaving behind a black hole. Or they may occur when two 
     exotic, very dense stars, called neutron stars, collide. One thing we do 
     know is that if a gamma-ray burst went off in our Galaxy, it would cause 
     mass extinction on the Earth in a matter of seconds, without warning.
     The Swift 
     observatory will look into the most distant reaches of the Universe and should 
     find about three bursts a week. Scientists will use this information to find 
     out how, where and when these cataclysmic events will occur - unlocking secrets 
     of the history and the structure of the Universe - and telling us whether 
     we should worry!