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Nature 433, 695-696 (17 February 2005) | doi:10.1038/433695a; Published online 16 February 2005

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Planetary science:  Saturn's mixed magnetosphere

Fran Bagenal1

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When interplanetary shock waves hit the Cassini spacecraft and then Saturn in January 2004, it presented a unique opportunity to study the planet's magnetosphere and to compare it with that of Earth.

Saturn can be considered as the geometric mean of Earth and Jupiter in terms of the strength and extent of its magnetic field. Three papers in this issue — by Clarke et al.1, Kurth et al.2 and Crary et al.3 — describe the response of Saturn's magnetosphere to changes in the solar wind as observed by NASA's Cassini spacecraft and the Hubble Space Telescope (HST).

  1. Fran Bagenal is in the Laboratory for Atmospheric and Space Physics and the Department of Astrophysical and Planetary Sciences, University of Colorado, Boulder, Colorado 80309-0392, USA.
    e-mail: Email: bagenal@colorado.edu

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