69879windowslivewriterniftynebulas-7cfdheic0109a2.jpgPlanetary nebulas are inportant objects in astronomy, they play a crucial role in the evolution of galaxys, they return material to the inter steller medium which has been enriched in heavy elements and other productsof nucleosynthesis (such as carbon, nitrogen, oxygen, and calcium). In other galaxies, planetary nebulae may be the only objects observable enough to yeild useful information about chemical abundonces enongh to yield useful information about chemical abandances.

The Double Helix Nebula Near center of the Milky Way it looks like a DNA molecule two strands wrapped around each other. Nobody has ever seen anythin like it befor mast are eather spiral galaxies full of stars or formless amorphous conglomerations of dust and gas. The nebula is approximatly 300 light years from the enormous black hole at the center of the Milky Way.
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The Orion Nebula is one of the most intensely studyied celestial features. The nebula has revealed much about the process of how stars and planetary systems are formed, collapsing clouds of gas and dust.

The Crab Pulsar, a rotating nutron star, which emitspulses of radiation from gamma rays to radio waves with a spin rate of 30.2 times per second. The nebula was the first a stronomical object identifiedwith a historical supornova explosion.

The Eagle Nebule is in the constellation serpens,a young, open cluster of a few thonsand stars that were formed from a giant molecular clond. They are still loosely bound to each other by gravitation, and active star formation is still going on.
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Stellar nurseries are made up of clouds of dust and gas called nebulaes, all stars are born of nebule except in some rare
instances when two neutron stars merge to form a black holes, both neutron stars and considered to do "dead" stars.

The case of the lower image of the retina nebula (lc 4406), we are viewing the circular disk on it's side, like
looking at a doughnut's edge. The star's spin and miagnetic fields.
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JordanWilkins & TylerScott
Got The Info Off Wikipedia & Science Time