An X-class solar flare erupted from the sun on July 3, the first large solar flare of solar cycle 25.
원문출처 : https://www.cnn.com/2021/07/07/world/solar-flare-cycle-25-scn/index.html
원문출처 : https://www.cnn.com/2021/07/07/world/solar-flare-cycle-25-scn/index.html