Hubbles  supersonic exhaust from Nebula M2-9 is a striking example of a "butterfly" or a bipolar planetary nebula. Another more revealing name might be the "Twin Jet Nebula." If the nebula is sliced across the star, each side of it appears much like a pair of exhausts from jet engines. Indeed, because of the nebula's shape and the measured velocity of the gas, in excess of 200 miles per second, astronomers believe that the description as a super-super-sonic jet exhaust is quite apt. Ground-based studies have shown that the nebula's size increases with time, suggesting that the stellar outburst that formed the lobes occurred just 1,200 years ago.
M2-9 is 2,100 light-years away in the constellation Ophiucus. The observation was taken Aug. 2, 1997 by the Hubble telescope's Wide Field and Planetary Camera 2. In this image, neutral oxygen is shown in red, once-ionized nitrogen in green, and twice-ionized oxygen in blue.
 

The design of time.wind  follows the description above. You can watch the twin jets after the big explosion, the birth of the time wind, the two streams of exhaust from jet engines thinning out into deep space. The oscillating peak tones of crashing nebulae, realized with voices from Sound Spectral in the registers of the outstanding software synthesizer GigaStudio 160, powered by an ArtSong^TM project file.