STEREO - Solar Terrestrial Relations Observatory
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About the STEREO Mission

STEREO (Solar TErrestrial RElations Observatory) is the third mission in NASA's Solar Terrestrial Probes program (STP). It employs two nearly identical space-based observatories - one ahead of Earth in its orbit, the other trailing behind - to provide the first-ever stereoscopic measurements to study the Sun and the nature of its coronal mass ejections, or CMEs.

STEREO's scientific objectives are to:

  • Understand the causes and mechanisms of coronal mass ejection (CME) initiation.
  • Characterize the propagation of CMEs through the heliosphere.
  • Discover the mechanisms and sites of energetic particle acceleration in the low corona and the interplanetary medium.
  • Improve the determination of the structure of the ambient solar wind.

Last Revised: Saturday, 09-Feb-2013 15:49:52 EST
Responsible NASA Official: [email address: therese.a.kucera<at>nasa<dot>gov]
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