Stereo probes

Solar TErrestrial RElations Observatory is the third mission in NASA's Solar Terrestrial Probes program. This two-year mission will trace the flow of energy and matter from the Sun to Earth. It will reveal the 3D structure of coronal mass ejections; violent eruptions of matter from the sun that can disrupt satellites and power grids, and help us understand why they happen.


Our Star, the Sun By human standards, the Sun is eternal. It rises...

Featured Images

View of Comets ISON and Encke from a Sun-watching spacecraft
Sizzling Comets Wednesday, November 27, 2013


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