| Term: | STEREO |
| Definition: |
Solar TErrestrial RElations Observatory; A spacecraft mission consisting of two identical spacecraft, STEREO A (“Ahead”) and STEREO B (“Behind”) that orbit closer and further from the Sun, respectively, than does Earth. The spacecraft carry solar imagers and solar wind detectors. Their orbit configuration allows the spacecraft to separate from Earth so that they can provide stereoscopic views of disturbances leaving the Sun. |