Little Ghost Nebula. (NGC 6369) (Credit: Hubble Heritage Team, NASA) A planetary nebula in the constellation Ophiucus over 2000 light years away. William Herschel discovered it in the18th century. It's round like a planet, but was actually formed from material ejected by a dying star. What remains of the star is the white dwarf near the center. The nebula's main ring structure is about a light-year across. Mona Evans, “Nebulae” http://www.bellaonline.com/articles/art43407.asp

NGC 6888 - Crescent Nebula, is a cosmic bubble about 25 ly across, blown by winds from its central, bright, massive star. NGC 6888's central star is classified as a Wolf-Rayet star (WR 136). NGC 6888 is about 5000 ly away in the constellation Cygnus.

The Cat's Eye Nebula (NGC 6543) is a planetary nebula in the constellation of Draco. Structurally, it is one of the most complex nebulae known, with high-resolution Hubble Space Telescope observations revealing remarkable structures such as knots, jets and sinewy arc-like features. It was discovered by William Herschel on February 15, 1786, and was the first planetary nebula whose spectrum was investigated, by the English amateur astronomer William Huggins in 1864.

Waterfall nebula

Cat's Eye Nebula

NGC 7635: The Bubble Nebula .

NGC 6069 Veil Nebula | by astrochuck

Planetary Nebula NGC 2818 from Hubble Image Credit: NASA, ESA, Hubble Heritage Team (STScI / AURA)

Eagle Nebula

NGC 5189: An Unusually Complex Planetary Nebula Image Credit: NASA, ESA, Hubble Heritage Team (STScI/AURA)

The Horsehead Nebula 1500 light years away, it is a dark cloud that is visible only because of the lighter nebula behind it.

planetary nebula | The Blinking Eye Nebula, a planetary nebula in Cygnus

The Helix Nebula

ring nebula

A Beautiful Trifid Image Credit & Copyright: R Jay Gabany The beautiful Trifid Nebula is a cosmic study... aka M20, it lies about 5,000 LYrs away 2ward the nebula rich constellation Sagittarius. A star forming region in the plane of r galaxy, the Trifid illustrates 3 diff types of astronomical nebulae; red emission nebulae dominated by light emitted by hydrogen atoms, blue reflection nebulae produced by dust reflecting starlight, and dark nebulae where dense dust clouds appear in silhoue...

A Fox Fur, a Unicorn, and a Christmas Tree: The constellation of the unicorn (Monoceros) pictured above as a star forming region cataloged as NGC 2264, is a complex jumble of cosmic gas and dust about 2,700 light-years distant and mixes reddish emission nebulae excited by energetic light from newborn stars with dark interstellar dust clouds.

Orion nebula close up

NGC 6302 (The Butterfly Nebula): With an estimated surface temperature of about 250,000 degrees C, the central star of this particular planetary nebula is exceptionally hot -- shining brightly in ultraviolet light but hidden from direct view by a dense torus of dust. This dramatically detailed close-up of the dying star's nebula was recorded by the newly upgraded Hubble Space Telescope. Credit: NASA, ESA, and the Hubble SM4 ERO Team

The Three Nebulas

NGC 7635: The Bubble Nebula

Butterfly nebula