What do the Owl, the Cat's Eye, the Ghost of Jupiter, and Saturn have in common? They're all planetary nebulae [
http://ad.usno.navy
] of course, glowing gaseous shrouds shed by dying sun-like stars as they run out [
http://www.astro.wa
] of nuclear fuel. Beautiful to look at [
http://www.ucalgary
], the symmetric, planet-like shapes [
http://www.seds.org
] of these cosmic clouds [
http://www.ipac.cal
images_pne.html ], typically 1,000 times the size of our solar system [
http://www.cismall.
], evoke their popular names. Flipping through [
http://www.noao.edu
pn.html ] digital pictures made by participants in the Kitt Peak National Observatory Visitor Center's Advanced Observing Program [
http://www.noao.edu
], astronomer Adam Block created [
http://antwrp.gsfc.
] this delightful animation. Ten different planetary nebula images are presented, each registered on the central star. In order, their catalog designations are NGC 1535 [
http://www.noao.edu
], NGC 3242 [
http://antwrp.gsfc.
] (Ghost of Jupiter), NGC 6543 [
http://home.achille
Nebulium.html ] (Cat's Eye), NGC 7009 [
http://antwrp.gsfc.
] (Saturn Nebula), NGC 2438 [
http://antwrp.gsfc.
], NGC 6772 [
http://www.noao.edu
], Abell 39 [
http://antwrp.gsfc.
], NGC 7139 [
http://www.noao.edu
], NGC 6781 [
http://www.noao.edu
], and M97 [
http://www.noao.edu
m97.html ] (Owl Nebula). This glorious final phase [
http://oposite.stsc
astrofile1.html ] in the life of a star lasts only about 10,000 years.
Explanation
What do the Owl, the Cat's Eye, the Ghost of Jupiter, and Saturn have in common? They're all planetary nebulae [
http://ad.usno.navy
] of course, glowing gaseous shrouds shed by dying sun-like stars as they run out [
http://www.astro.wa
] of nuclear fuel. Beautiful to look at [
http://www.ucalgary
], the symmetric, planet-like shapes [
http://www.seds.org
] of these cosmic clouds [
http://www.ipac.cal
images_pne.html ], typically 1,000 times the size of our solar system [
http://www.cismall.
], evoke their popular names. Flipping through [
http://www.noao.edu
pn.html ] digital pictures made by participants in the Kitt Peak National Observatory Visitor Center's Advanced Observing Program [
http://www.noao.edu
], astronomer Adam Block created [
http://antwrp.gsfc.
] this delightful animation. Ten different planetary nebula images are presented, each registered on the central star. In order, their catalog designations are NGC 1535 [
http://www.noao.edu
], NGC 3242 [
http://antwrp.gsfc.
] (Ghost of Jupiter), NGC 6543 [
http://home.achille
Nebulium.html ] (Cat's Eye), NGC 7009 [
http://antwrp.gsfc.
] (Saturn Nebula), NGC 2438 [
http://antwrp.gsfc.
], NGC 6772 [
http://www.noao.edu
], Abell 39 [
http://antwrp.gsfc.
], NGC 7139 [
http://www.noao.edu
], NGC 6781 [
http://www.noao.edu
], and M97 [
http://www.noao.edu
m97.html ] (Owl Nebula). This glorious final phase [
http://oposite.stsc
astrofile1.html ] in the life of a star lasts only about 10,000 years.
Explanation