When you see the Sun zipping through the SDO movies you know its time for a calibration maneuver. Last Wednesday we did an EVE cruciform, no...

Compasses tell us which way is North on the Earth. It's easy, the needle with the big N points toward the North Pole of the Earth. Othe...

Check out the July 7 Brewster Rockit, a comic at GoComics.com . A nice little illustration about space weather effects in the heliosphere. A...

Maintenance on the chillers in the building hosting the SDO JSOC computers at LMSAL means those computers have been turned off. The main JSO...

Little SDO is looking a little sad today. His long time partner in EPO, Camilla Corona SDO has retired as the SDO mascot. Camilla had an gre...

SDO is in a 28 degree inclined geosynchronous orbit, 36,000 km above Earth's surface. Unlike a satellite in geostationary orbit, which ...

It took a little over 10 years to plan and design SDO. More information the multi-phase process below. SDO Mission Milestones Pre...