R. Paul Butler

Robert Paul Butler (born April 1960) is an astronomer and staff scientist at the Carnegie Institution for Science in Washington, D.C., who searches for extrasolar planets.

he and his team have discovered over half of the planets found orbiting nearby stars. He is noted for his pioneering work in Doppler spectroscopy, a method used to detect stars having orbiting planets by measuring the "wobble" induced by the gravitational forces between the star and its orbiting planet(s). Provided by Wikipedia
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