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...

Space weather is (1) the study of eruptive solar activity (solar storms) such as solar flares, coronal mass ejections, solar energetic part...

Although it is difficult to determine exactly when the SDO mission will end, we know it will be around for at least another decade.  Once ...

That is a tough one. Here is one surprising discovery for each of the instruments. AIA: AIA observed a comet travel through the sun’s cor...

HMI (Helioseismic and Magnetic Imager) The Helioseismic and Magnetic Imager extends the capabilities of the SOHO/MDI instrument wi...

This image is a view of the sun captured by NASA's Solar Dynamics Observatory on Oct. 7, 2010, while partially obscured by our moon. A c...