29 May
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!