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Solar Terrestrial Relation Observatory
Space Agency:
Orbit:
State of spacecraft:
NASA
Ecliptic orbit, Co-rotating with the Earth around the Sun
On Oct. 1, 2014 loss of communication of STEREO-B. STEREO-A continues to operate normally
Purpose:
Results:
Composed of two nearly identical observatories - one ahead of Earth in its orbit, the other trailing behind - STEREO has traced the flow of energy and matter from the Sun to Earth.
Has provided scientists a unique and revolutionary view of the Sun-Earth System, like a 3D structure of coronal mass ejections.
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