The Cat's Eye Nebula

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nebula,Astronomy,science
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A classic planetary nebula, the Cat's Eye (NGC 6543) represents a final, brief yet glorious phase in the life of a sun-like star. This nebula's dying central star may have produced the simple, outer pattern of dusty concentric shells by shrugging off outer layers in a series of regular convulsions. But the formation of the beautiful, more complex inner structures is not well understood.

The Orion Nebula Is Incredible

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nebula,Astronomy,Orion,space
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Astrophotographer John Chumack was killing time while waiting for Comet ISON (a potentially spectacular comet making its closest approach to the sun in November and December) to rise when he captured this beautiful image of the Orion Nebula, M42 (NGC 1976) along with neighbor, De Mairan's Nebula M43.
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Lovejoy's Tail

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the tiny little dumbell nebula hangs right above it.
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Via NASA: 

Buffeted by the solar wind, Comet Lovejoy's crooked ion tail stretches over 3 degrees across this telescopic field of view, recorded on February 20. The starry background includes awesome bluish star Phi Persei below, and pretty planetary nebula M76 just above Lovejoy's long tail. Also known as the Little Dumbbell Nebula, after its brighter cousin M27 the Dumbbell Nebula, M76 is only a Full Moon's width away from the comet's greenish coma. Still shining in northern hemisphere skies, this Comet Lovejoy (C/2014 Q2) is outbound from the inner solar system some 10 light-minutes or 190 million kilometers from Earth. But the Little Dumbbell actually lies over 3 thousand light-years away. Now sweeping steadily north toward the constellation Cassiopeia Comet Lovejoy is fading more slowly than predicted and is still a good target for small telescopes.