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.
Partially clear, partially blurred
Credit: IRIS, LMSAL/NASA, Joten Okamoto (NAOJ)
IRIS has good eyesight, so it is able to spatially resolve many structures, such as loops in the corona, with clarity. But here, for some reason, we see blurred objects. This does not mean that IRIS is not performing well in parts, but that such structures really exist in the Sun. It is a common structure in soft X-ray images, and there is probably hot plasma there.