Wikipedia AI summary

List of planetary nebulae

The following is an incomplete list of known planetary nebulae.

AI wikipedia summery

Cometary knotSupernova remnantsProtoplanetaryLargest NebulaeDiffuseLyman-alpha blobPinwheel nebulaBipolar nebulaH I regionHigh-velocity cloudInfrared cirrusMolecular cloudInterstellar cloudSupershellPulsar wind nebulaSupernova remnantPlanetary nebulaIntegrated Flux NebulaWolf–Rayet nebulaProtoplanetary nebulaNova remnantSolar nebulaEvaporating gaseous globuleBok globuleGiant molecular cloudVariable nebulaReflection nebulaH II regionEmission nebulaDiffuse nebula

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This page summery from https://en.wikipedia.orgList_of_planetary_nebulae