Forum: Solar Activity, Reports and Discussions

Active Region 12297 was the site of two M-class flares yesterday and an X2.1 starting today at 1611 UTC (12:11 p.m. ET). AR 12297 is in the southern...

SOHO is approaching the date when its images will reveal its 3000th comet, a record-extending achievement. So we are offering everyone an opportunity...

The spring 2015 eclipse season has begun! Yesterday at 0711 UTC (2:11 am ET) the Earth passed between SDO and the Sun. We can't see the Sun during...

An unusual comet is skirting past the Sun (Feb.18-20, 2015). "It's a 'non-group comet,' meaning that it does not appear to be related to any other...

The San Jose Mercury News had a front-page story about predicting solar flares. Drs. Bobra and Couvidat use many kinds of data, but rely heavily on...

SDO's 5th anniversary of launch was celebrated with the release of a Five year video by the GSFC Office of Communications. We also attended the...

It is hard to believe that the SDO launch was 5 years ago! Tomorrow, February 11, is the fifth anniversary of the SDO launch. It was a cold day in...

STEREO-A is now on the other side of the Sun, over 290 million km (180 million miles) away (See Where is STEREO? ). Recently, a new planet has...

Today, February 4, 2015, SDO performed two maneuvers, the EVE FOV from 1315-1557 UTC (5:15-10:57 am ET) and the HMI/AIA Flat Field from 1630-1907 UTC...

UNESCO has declared 2015 as the International Year of Light. A story on CNN showed NASA images to celebrate IYL2015. One image was an AIA 193...

Today, from 1800-2252 UTC (1:00-5:52 pm ET), SDO will perform the EVE Cruciform calibration maneuver. During this time the images may be blurred. ...

Yesterday at 1950 UTC (2:50 p.m. ET) SDO did Momentum Maneuver #21. Science data may not be available for 20 minutes on either side of the thruster...

Yesterday, January 19, 2015, at 1749 UTC (12:49 pm ET) the AIA instrument recorded its 100,000,000th image. Here it is, an AIA 193 Å image...

The number 100,000,000 has been on my mind this week, especially as Monday approaches. If I traveled 100,000,000 miles I could have gone to the...

SDO chosen as one of the Top Stories of 2014 by Discover magazine. Congratulations SDO team! More...

Happy Perihelion! Yesterday at 0636 UTC (1:36 am ET) the Earth was as close to the Sun as it will be in 2015. This is called perihelion. The distance...

Here is an illustration of a rocket flight from the surface of Earth to the center of the Sun. A few altitudes in each atmosphere are shown. The...

Welcome to 2015! There were no fireworks on the Sun last night to welcome in the New Year. Only a few C-class flares during the last day of 2014....

Im no expert on space weather but IMHO SuspiciousObserver @ Youtube is. He puts out a 5 minute report every a.m. from Ohio. Today he made mention of...

Monica Bobra of Stanford University and Chau Dang of Scientific American published a blog article about flares seen by SDO. You can see where the...

I just found out that there have been some changes made to a few of my "Sun" data collection sites... many 404 error messages... My first thought was...

Today SDO did two calibration maneuvers. The EVE field of view started at 1315 UTC (8:15 a.m. ET) and the HMI/AIA flatfield started at 1630 UT (11:30...

SDO will experience the third lunar transit this year on November 22, 2014. Here is the FOT movie predicting what we will see during the transit. ...

The EVE cruciform is today starting at 1800 UTC. During this maneuver the spacecraft rocks back and forth, helping EVE to maintain an accurate...

Active Region 12192, which was the location of 6 X-class and several M-class flares in late October, is coming back for an encore. Here is a movie of...

The SDO JSOC is recovering from an internal disruption and images are unavailable. This outage should last 24 hours. More...

Communications with the STEREO Behind spacecraft were interrupted on October 1,2014 immediately after a planned reset of the spacecraft performed as...