It was a lovely fall day in Maryland. A perfect day for a lunar transit! Here's an AIA 171 Å image showing the Moon blocking a slice o...

The wobbling images tell us that another round of calibration maneuvers has started. Today we have the EVE Field of View and AIA/HMI flatfie...

SDO will perform Momentum Management (Delta-H) Maneuver #30 today. From 1925-2000 UTC (3:25-4:00 pm ET), SDO science data may be missing or ...

The next set of SDO maneuvers and other niceties has been released. July 5, 1818 UTC 1320-1920 UTC (10:20 am ET - 3:30 pm ET) - EVE FOV a...

I was in Brussels visiting the Royal Observatory Belgium to talk about improving the accuracy of the International Sunspot Number. The ISN i...

SDO had another visit from the Moon today, as it passed between SDO and Sun. Here are two AIA 193 images showing the Moon moving onto and r...

May 1, 2017 is SDO's 7th birthday of data collection. We launched on February 11, 2010, reached our final orbit, checked out the instrum...