Marcy, Geoffrey W. (1954–)
Geoffrey Marcy was a p rofessor of astronomy at the University
of California, Berkeley who, together with Paul Butler and other colleagues, was responsible for the discovery of well over
half the presently known extrasolar planets and for obtaining evidence that (a) the solar system may be unusual in its
makeup, and (b) that brown dwarfs in
orbit around stars are surprisingly rare. From 1998, Marcy served on
the NASA working groups concerned with the Terrestrial
Planet Finder and the origin of the solar system. He obtained a B.A.
from the University of California, Los Angeles (1976), and a Ph.D. from
the University of California, Santa Cruz (1982).
PLANETS AND SUBSTELLAR OBJECTS