Huge plasma release on the South Pole of the Sun. Curiously coincided with an M1 flare from AR3536, which is near the east limb just above the solar equator.
https://www.swpc.noaa.gov/products/goes-solar-ultraviolet-imager-suvi
Visible in 304 angstroms for those inclined to check. The M flare is visible also, but better viewed in higher frequencies like 131 or 94 angstroms.