planetary nebula meaning in Hindi

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"' NGC 3195 "'is a planetary nebula located in the constellation Chamaeleon.
Lyra also hosts the Ring Nebula, the second-discovered and best-known planetary nebula.
"' NGC 5315 "'is a planetary nebula in the constellation Circinus.
"' NGC 2242 "'is a planetary nebula in the constellation Auriga.
William Herschel, discoverer of Uranus, eventually coined the term " planetary nebula ".
Chamaeleon contains one planetary nebula, NGC 3195, which is fairly faint.
"' NGC 6886 "'is a planetary nebula in the constellation Sagitta.
"' NGC 6881 "'is a planetary nebula, located in the constellation of Cygnus.
The "'Helix Nebula "'is a large planetary nebula located in the constellation Aquarius.
"' Abell 12 "'is a planetary nebula located in the constellation of Orion.

noun.

a nebula that was once thought to be a star with its planets but is now thought to be a very hot star surrounded by an expanding envelope of ionized gases that emit a fluorescent glow because of intense radiation from the star