Image of IMAGE in space

Magnetospheric Cusp Seen From a New Space Vantage Point


The IMAGE satellite has detected plasma in the funnel-like cusp region of Earth's magnetic field. The plasma appears to change in its density depending on how the solar wind magnetic field varies in strength and polarity.

(2000: V. K. Henize, P. H. Reiff, B. W. Reinisch, J. L. Green, S. F. Fung, and J. Goldstein)

Related IMAGE Discoveries

Additional Information

Plasma -A complex mixture of atoms and electrically-charged particles. Typical space plasma contain uncharged atoms, electrons, protons and ions of various atoms.

Cusp -Regions in the sunward-tilted magnetic field of Earth where charged particles can enter the polar regions. Faint daytime aurora result, but are not visible to the eye.

IMAGE experiments
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Dr. S. Odenwald,, +1-301-286-6953
NSSDC, Mail Code 630, NASA Goddard Space Flight Center, Greenbelt, MD 20771
NASA Approval: J. L. Green,
Rev. 1.0.0, 24 April 2003, EVB II