This comparison video starts with a view of the solar disc at ultraviolet wavelengths from the NASA Solar Dynamics Observatory. The final view of the disc comes from recent observations by ALMA at millimetre wavelengths.
More information and download options: http://www.eso.org/public/videos/eso1703b/
Credit:
NASA-SDO, ALMA (ESO/NAOJ/NRAO)
Post time: Feb-15-2017