Behemoth sunspot unleashed another strong flare on September 24, 2011 an X1.9-category blast at 0940 UT. The explosion produced a coronal mass ejection (CME) that might deliver a glancing blow to Earth’s magnetic field in the days ahead.
Active sunspot 1302 has turned the sun into a shortwave radio transmitter. Shock waves rippling from the sunspot’s exploding magnetic canopy excite plasma oscillations in the sun’s atmosphere. The result is bursts of static that may be heard in the loudspeakers of shortwave radios on Earth. Read more at spaceweather
Listen to the Sound File: HERE
The sound file corresponds to an M3 flare at 1918 UTC