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.
Dynamic active region
Credit: IRIS, LMSAL/NASA, Tiago Pereira, UiO
On Nov 28 and preceding days, IRIS tracked a solar active region as it emerged. Here we see it after it passed the central meridian, at temperatures around 80,000 K. The active region is already brighter than the quiet regions near the edges (dark), but in the lower left part of the image we find the brightest, hottest, and most dynamic part. It is just near a sunspot (barely visible at these wavelengths), and produces several small eruptions and explosions.