IRIS Movie of the Day
At least once a week a movie of the Sun taken by NASA's Interface Region Imaging Spectrograph (IRIS) is posted by one of the scientists operating the instrument.
Colorized timelapse of AR 13053
Credit: IRIS, LMSAL/NASA, Roy Smart
The IRIS spectrograph scanned NOAA active region 13053 forty times last week to capture this timelapse. It shows the Si IV 1394 Angstrom spectral line colorized according to its Doppler shift. In this color scheme, blue means the Si IV ions are moving towards the Earth, green means the ions are stationary, and red means they are moving away from the Earth. In this timelapse we can see the impressive results of an M2.5 flare on 2022-07-08 20:30 and various smaller C-class flares.