By 2014, 16,000 volunteers had traced solar eruptions across spacecraft images; 38,000 hand-drawn tracks helped scientists catalog 144 coronal mass ejections

Solar Stormwatch involved over 16,000 volunteers who tracked solar eruptions using images from NASA's STEREO spacecraft. Participants marked paths of coronal mass ejections, allowing researchers to compile a comprehensive catalog of these events. The project addressed challenges that automated systems faced in recognizing complex solar phenomena. Data gathered from this citizen science effort enhanced predictions and analysis of space weather.