Today the Moon passed between SDO and the Sun from 1331-1556 UTC (8:31-1056 am ET). At 2.5 hours in length, it was the longest lunar transit...

The SDO Flight Dynamics team has produced and delivered the first quarter predictions. They extend to the beginning of the Fall Eclipse Sea...

Today, January 4, at 1200 UTC (7 am EST), the Earth was at perihelion. This is when we were closest to the Sun in our orbit around the Sun. ...

A recent blog post at The Astronomy Stackexchange asked whether an AIA image taken during the perihelion passage of Comet ISON showed the c...

Images are flowing again from the SDO JSOC. Many thanks to the people who worked this weekend to repair the system.

Update: Images are flowing again, thanks to everyone for their patience. The SDO HMI/AIA data distribution system is undergoing some eme...

Tomorrow, December 21, 2013 at 1711 UTC (12:11 pm ET) is the winter solstice in the northern hemisphere (the summer solstice in the southern...