29 November 2020 coronal mass ejection

The Sun started SOHO’s 25th anniversary celebrations early, unleashing a coronal mass ejection – a large release of plasma and magnetic fields – on 29 November.
The eruption was associated with a powerful medium-class flare on the scale used to measure solar storms.
SOHO, the Solar and Heliospheric Observatory, launched 2 December 1995. The mission is an international collaboration between ESA and NASA.