How do solar flares reach Earth?
A solar flare happens when a large amount of plasma from the sun’s surface is ejected outwards. When the plasma returns to the suns surface, it collides with denser material found in the chromosphere. This collision releases large amounts of energy in the form of x-rays and other wavelengths which travel toward the earth at the speed of light. Sometimes the plasma does not return to the sun, but instead travels towards the planet where it is deflected by the planets’ magnetic fields.