Click on the videos to see the original large version and press F11 for full screen.


This is a picture of sunspot 4374 converted to a 3D object by showing dark areas lower than bright areas. Sunspots are lower than the solar surface as described by the Wilson effect.
Click here to open the 3D viewer and then drag the mouse to spin it around and spin mouse wheel to zoom. Looks best in full screen mode.
This was the featured image on Spaceweather.com on 21.2.2026. Click here to read their technical description of what you are seeing.