SDO is currently in the "design and build" phase of mission development, i.e. the instruments and spacecraft are being built, the ground system is being developed, and the flight software is being written. Tests of critical systems have already begun, in preparation for the full spacecraft assembly, system tests and verification, culminating in an December 2008 launch. The prime observing phase of SDO is planned for five years - half a solar cycle - with the possibility of a 5-year extension.
- July 29-August 16, 2008
- SDO passed the Thermal Vacuum Test in the SES chamber
- July 16-25, 2008
- SDO passed the Thermal Balance Test in the SES chamber
- May 25-June 2, 2008
- SDO passed the Vibration and Acoustic tests in Building 10 at Goddard
- April 13-20, 2008
- SDO passed the EMI/EMC Tests in Building 7 at Goddard
- January 5, 2008
- Instrument installed on spacecraft bus, SDO becomes an observatory!
- November 30, 2007
- AIA instrument arrived
- November 14, 2007
- HMI instrument arrived
- October 27, 2007
- Propulsion module placed inside spacecraft bus.
- September 25, 2007
- EVE instrument arrived
- April 5-7, 2005
- Passed Critical Design Review (CDR) at GSFC
- June 1, 2004
- SDO/LWS Confirmation Review at NASA HQ, Transition to Phase C
- March 22-26, 2004
- First SDO Science Workshop in Boulder, CO
- September 3, 2003
- Initial Confirmation Review at NASA HQ (SDO Project), transition to Phase B
- April 8-11, 2003
- Systems Concept Review (SDO Project with instrument team participation) in Greenbelt, MD
- December 3-5, 2002
- SDO Project Mission Definition Retreat (GSFC project and instrument teams) NASA GSFC
- November 13-15, 2002
- 2nd LWS Community Workshop at JHUAPL
- March 7, 2002
- SDO Science Kick-off Meeting
- January 18, 2002
- SDO Announcement of Opportunity Released: AO-02-OSS-01
- July 2001
- SDO Science Definition Team Report Released
- April 24, 2001
- SDO Announcement of Opportunity Proposals Due
- November 2000 - July 2001
- SDO Definition Team Activities
- July 2000
- LWS Preformulation Study Released
- May 10-12, 2000
- 1st LWS Community Workshop at GSFC