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What is the name of this astronomical object?

Cepheid

Pulsar

Supernova

Nebula

The Cat's Eye Nebula is a relatively bright planetary nebula in the northern constellation of Draco, discovered by William Herschel on February 15, 1786. It was the first planetary nebula whose spectrum was investigated by the English amateur astronomer William Huggins, demonstrating that planetary nebulae were gaseous and not stellar in nature.

M

4

NASA Goddard Space Flight Center wikipedia → Cat's Eye Nebula

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12

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11

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