Caption: 
Tens of minutes later, the major solar ion event unfolds at Earth. Human explorers and spacecraft systems are particularly susceptible to ion radiation. Energetic protons hit the sensitive charge-coupled devices (CCDs) of the EIT and result in a “snowstorm” effect. Humans in space would need protection at this time. (Note: This image has been enhanced for emphasis.)

Credit: 
Image Courtesy of ESA/NASA/SOHO