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Planetary Brightness Changes: Evidence for Solar Variability
G. W. Lockwood
New Series, Vol. 190, No. 4214 (Nov. 7, 1975), pp. 560-562
Published by: American Association for the Advancement of Science
Stable URL: http://www.jstor.org/stable/1740437
Page Count: 3
You can always find the topics here!Topics: Uranus, Neptune, Astronomical magnitude, Oblateness, Pollen, Saturnian satellites, Brightness, Caves, Astronomical objects, Comparison stars
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Brightness changes of Uranus and Neptune at 440 nanometers were highly correlated from 1956 to 1966. Recent observations of Saturn's satellite Titan and of Uranus and Neptune show a steady brightening at 551 and 472 nanometers since 1972. Either the solar constant is slightly variable or solar activity causes correlated changes in the albedos of planetary bodies.
Science © 1975 American Association for the Advancement of Science