Scientists trying to detect gravitational waves—ripples in the fabric of space-time-are a reticent lot. Understandably so: in the late 1960s Joseph Weber, a pioneer of the field, declared that he had found them when he had not, and mouths have been kept firmly shut ever since. Nearly 40 years on, researchers around the world are still straining to see gravitational waves, so far without success. This week scientists met to discuss plans for a more sensitive detector that could be built in space.
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