This ultraviolet image, captured by NASA’s Solar Terrestrial Relations Observatory (STEREO) Ahead spacecraft on February 12, 2010, shows solar storms brewing in two active areas of the Sun.
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For the first time in history, the world has a full view of the far side of the Sun and of the entire 360-degree sphere at once.
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NASA’s twin STEREO spacecraft spy a solar prominence from two angles.
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Fiery arcs rise above an active region on the surface of the Sun in this pair of images of a coronal mass ejection on January 27, 2010.
NASA’s STEREO-B spacecraft observed Comet PanSTARRS and Earth from the far side of the Sun in March 2013.
A flare bursts from the Sun in this detailed image taken on August 1, 2010, by the STEREO Ahead telescope.
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