(2)Astronomers have recorded the sound of acoustic waves being triggered by explosions on the Sun. Looping magnetic fields along the Sun's corona carry these magnetic sound waves, bouncing them back and forth within the 'coronal loops'. According to Professor Robert von Fay-Siebenbuergen, "The effect is much like plucking a guitar string." Read more and hear sound clips at BBC News(1).

1. http://news.bbc.co.uk/2/hi/science/nature/6574059.stm
2. http://news.bbc.co.uk/2/hi/science/nature/6574059.stm