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Profile of a
Spacecraft and significant computer and radar facilities are
, and the
Canadian Space Agency
U.S. National Science
The spacecraft of ISTP are placed in orbits that allow
physicists to observe the key regions of Earth's space, or
regions include the Sun's surface and atmosphere, the solar wind,
magnetosphere, from the bow shock to the auroral regions to the
Orbiting as far as one million miles from Earth and as close as a
the spacecraft of ISTP make coordinated, simultaneous observations
and geospace over extended periods of time.
With such observations, scientists are increasing our knowledge
- The structure and dynamics of the Sun;
- The origin of the solar wind;
- The composition and character of the solar wind;
- The flow of energy between Sun and Earth; and
- The cause-effect relationship between events on the Sun and
impact on Earth.
ISTP was conceived in the 1970s, planned in the 1980s, and
the 1990s. The first spacecraft, Geotail, was launched in 1992,
recent, Polar, went up in 1996. Each of the missions of ISTP is
continue through 1998, and scientists and engineers are now making
extend their mission through the next solar maximum in
Comments, Questions, Suggestions Webmaster
Author: Mike Carlowicz
Official NASA Contact: ISTP-Project
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Above is background material for archival reference only.