http://web.mit.edu/newsoffice/2002/pluto.html
Pluto is undergoing global warming, researchers find
October 9, 2002
BIRMINGHAM, Ala.--Pluto is undergoing global warming, as evidenced by a
three-fold increase in the planet's atmospheric pressure during the past 14
years, a team of astronomers from Massachusetts Institute of Technology
(MIT), Williams College, the University of Hawaii, Lowell Observatory and
Cornell University announced in a press conference today at the annual
meeting of the American Astronomical Society's (AAS) Division for Planetary
Sciences in Birmingham, AL.
The team, led by James Elliot, professor of planetary astronomy at MIT and
director of MIT's Wallace Observatory, made this finding by watching the
dimming of a star when Pluto passed in front of it Aug. 20. The team carried
out observations using eight telescopes at Mauna Kea Observatory, Haleakala,
Lick Observatory, Lowell Observatory and Palomar Observatory. Data were
successfully recorded at all sites.