Light is seen all the time, but, so far, a confirmed direct detection of gravitational radiation has yet to be made . Separated detectors can be used to discern GWs from everyday bumps. Powerful astronomical GW sources would coincidentally jiggle even detectors on opposite ends of the Earth. When it and its sister interferometer in Louisiana come online in 2002, they may see a GW sky so strange it won't be immediately understood. APOD mourns the recent passing of Joseph Weber , a visionary thinker and pioneer in gravitational wave detection.
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