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SCIENCE GRAVITY
RTRQ2F 
January 09, 2002 
Wearing laser protective eyeglasses, Dr. Fred Raab, observatory head at
the LIGO Hanford Observatory... 
Hanford, United States of America 
DR FRED RAAB OF LIGO HANFORD FACILITY INSPECTS TUBES PROTECTING LASERS. 
Wearing laser protective eyeglasses, Dr. Fred Raab, observatory head at
the LIGO Hanford Observatory in Hanford, Washington, inspects the steel
tubes that house the observatory's four-kilometer long laser
apparatuses, January 9, 2002. LIGO, which stands for Laser
Interferometer Gravitational-Wave Observatory, has the mission to
observe gravitational waves of cosmic origin including those created by
black holes, star collisions and remnants of gravitational radiation
created by the "big-bang" birth of the universe. The LIGO Hanford
facility houses laser interferometers consisting of mirrors suspended
at each of the corners of a gigantic L-shaped vaccum system measuring
four kilometers on each side. LIGO Hanford is part of a $370 National
Science Foundation project focused at researching these gravitational
waves. REUTERS/Anthony P. Bolante/FEATURE-SCIENCE-GRAVITY

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