STEREO A and B

Astronomy in Space with David Dickinson

The Return of Stereo B?

Feared lost for almost two years, NASA's Stereo B solar observatory is now back in (tentative) contact with mission control.

Stereo A and B before launch

Space Missions

Contact Lost with Sun-watching Stereo B

Despite rescue efforts, no one has heard from one of two NASA spacecraft on the far side of the Sun since October 1st.

Astronomy & Observing News

STEREO: The Sun's Corona Unraveled in 3D

Twin spacecraft far apart are mapping loops of the solar corona in three dimensions. The shapes are not always turning out as expected.