A M3-class solar flare occurred on the Sun in the direction of Earth

Sunspot AR2871 exploded on Sept. 23 (0442 UT), causing a massive M3-class solar flare. NASA’s Solar Dynamics Observatory recorded an extreme ultraviolet flare.

Type II and IV solar radio bursts immediately after the flare suggest that there was also a coronal mass ejection. If so, it is probably headed almost directly toward Earth.

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