Eerie flashes of blue, green, and red recorded by the Galileo spacecraft reveal that Jupiter’s moon Io has the most dazzling auroras in the solar system.

Geissler, P.E., A.S. McEwen, et al. 1999. Galileo imaging of atmospheric emissions from Io. Science 285(Aug. 6):870.

Paul E. Geissler
University of Arizona
Lunar and Planetary Laboratory
Tucson, AZ 85711

Alfred S. McEwen
University of Arizona
Lunar and Planetary Laboratory
Tucson, AZ 85711

From Science News, Vol. 156, No. 14, October 2, 1999, p. 219. Copyright © 1999, Science Service.