Giant sunspot AR2529 is making noise, and it sounds like static. On April 14th, amateur astronomer Thomas Ashcraft heard a gentle crescendo of noise emerge from the loudspeaker of his shortwave radio telescope in New Mexico. "It was a Type III radio burst from the sun," he says. Click to listen (the static surges about 20 seconds into the audio file):
"The burst was recorded in stereo using two separate short wave receivers, one tuned at 20.030 MHz and the other at 21.119 MHz. Best listened to with headphones," says Ashcraft.