Cat's Eye Nebula
The Cat's Eye Nebula or NGC 6543, is a generally splendid planetary cloud in the northern heavenly body of Draco, found by William Herschel on February 15, 1786.
It was the main planetary cloud whose range was researched by the English novice space expert William Huggins, showing that planetary nebulae were vaporous and not stellar in nature.
Fundamentally, the protest has had high-determination pictures by the Hubble Space Telescope uncovering ties, planes, air pockets and complex circular segments, being lit up by the focal hot planetary cloud core (PNN).
It is an all around examined question that has been seen from radio to X-beam wavelengths.