NASA SDO - X1-Class Solar Flare, September 22, 2011 @LittleSDOHMI

Uploaded September 2011 | Updated September 2026, 2 weeks ago

At 11:00 UT the new active region coming over the limb peaked at an X1-class solar flare. Here is a look at this event in various forms/wavelengths. The many different views of SDO. The last image shows the event as follows:

1. the HMI instrument shows us the large sunspot
2. AIA 304 Angstroms shows the ~50,000 degrees C. Chromosphere
3. AIA 171 Angstroms shows the 1 million degrees C. transition region between Chromosphere and Corona
4. AIA 335 Angstroms shows ~2.5 million degrees C. Corona
5. AIA 94 Angstroms shows ~6 million degrees C. Corona
6. AIA 131 Angstroms shows ~10 million degrees C. upper Corona
7. Composite of AIA 094, 335, 193

Credit: NASA SDO

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