NASA dicit:
About 5,000 light-years from Earth, the stunning nebula NGC 2392 formed after the demise of a star like our Sun.
In this sonification, the image is scanned clockwise like a radar. The radius is mapped to pitch, so light farther from the center is higher pitched. The outline of the nebula’s shell can be heard in the rising and falling of pitch, punctuated by its spokes. Brightness controls the volume.
The nebula was discovered by William Herschel on January 17, 1787, in Slough, England. He described it as “A star 9th magnitude with a pretty bright middle, nebulosity equally dispersed all around. A very remarkable phenomenon. NGC 2392 WH IV-45 is included in the Astronomical League’s Herschel 400 observing program.
Video credit: NASA Goddard
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