An article from space.com: 16 May 2002: Think seismology and San Francisco could be your next thought. But astro-seismologists apply the same measuring of waves to stars, including our Sun, to learn more about what goes on under the surface. Seismic waves are cousins of sound waves. Now for the fist time researchers have measured the sounds of a very big star, called xi Hya. The aging giant is about 10 times larger than our Sun and shines 60 times brighter. Not surprisingly, it is now said to behave like a giant sub-ultra-bass instrument. The observations were made with the 1.2-m Swiss telescope at the European Southern Observatory in Chile. Researchers hope the breakthrough will pave the way for full examinations of the innards of highly evolved and massive stars. I can see it now... For Sale One bright red spherical powered sub. Woofer Size: Approximately 500x10^9 inch diameter Amplifier: Single channel self-sustaining nuclear fusion device. Estimated output 4.0x10^27 W. Cabinet: State of the art gravitational enclosure. Shipping Weight: 12x10^30 lbs, buyer must arrange for pick up... Please call with best offer.