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Session 11 - Sun-Earth Connections Roadmap.
Oral session, Saturday, June 28
Ballroom A, Chair: Loren Acton

[11.03] The Solar Terrestrial Relations Observatory (STEREO)

D. M. Rust (JHU/APL)

One of the most important scientific advances of the space age was the discovery of coronal mass ejections (CMEs). CMEs can severely disturb Earth's space environment, but lacking adequate perspective, no one can tell when a CME will impact Earth or with what effect. No one has a clear idea of CME structure or extent in interplanetary space. And, the events that most affect Earth are the ones least likely to be detected with ground-based or Earth-orbiting telescopes. STEREO will provide a totally new perspective on solar eruptions and their consequences for Earth. Achieving this perspective will require moving away from our customary lookout point. But STEREO means much more than stereo pictures. Two spacecraft will carry identical clusters of telescopes, including coronagraphs and X-ray or EUV imagers, and each will carry identical sets of plasma, magnetic field and energetic particle detectors. The principal science goal is to determine the structure and evolution of CMEs and their effects throughout the heliosphere. We will characterize CMEs at their onset, track them through interplanetary space, and sample them when the reach Earth’s orbit. STEREO has been recommended for a NASA new start in year 2000 by the Sun Earth Connections Roadmap workshop. The mission is being studied by a Science Definition Team. The mission and the work of the team so far will be discussed.

Program listing for Saturday