Important notice about reduced STEREO science operations
The STEREO Ahead spacecraft is currently operating on
the second side lobe of the high gain antenna. See this
important notice for more information.
Communications with the STEREO Behind spacecraft were interrupted on October 1,
2014 immediately after a planned reset of the spacecraft performed as part of a
test of solar conjunction operations. The spacecraft telemetry indicated an
anomaly in the guidance and control system, but this is still being
evaluated. No further communications have been successful since Oct. 1st.
for more information.
The STEREO Ahead spacecraft has already successfully tested the transition into
and out of solar conjunction operations. Actual solar conjunction operations
will take place between March 22 and July 14, 2015. STEREO Ahead continues to
operate nominally, and is currently providing our only views of the far side of
Attempts to reestablish communications with the STEREO Behind spacecraft are
Launched in 2006, the STEREO mission achieved its prime science goals within
the two-year prime mission, but continues to explore solar and heliospheric
activity through the current solar maxmimum and beyond.
Last Revised: Tuesday, 20-Jan-2015 11:26:26 EST
Responsible NASA Official:
Webmaster: Kevin Addison