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Keywords: planetary nebula, NGC 7293
![MyCn18: туманность в форме песочных часов](https://images.astronet.ru/pubd/2002/06/15/0001177356/MyCn18_hst.preview.jpg)
15.06.2002
The sands of time are running out for the central star of this hourglass-shaped planetary nebula. With its nuclear fuel exhausted, this brief, spectacular, closing phase of a Sun-like star's life occurs as its outer layers are ejected - its core becoming a cooling, fading white dwarf.
![NGC 2440: кокон нового белого карлика](https://images.astronet.ru/pubd/2003/09/08/0001192824/ngc2440_hst2_big.preview.jpg)
26.04.1998
Like a butterfly, a white dwarf star begins its life by casting off a cocoon that enclosed its former self. In this analogy, however, the Sun would be a caterpillar and the ejected shell of gas would become the prettiest of all!
![Возникновение туманности Тухлое Яйцо](https://images.astronet.ru/pubd/2004/10/09/0001199950/rottenegg2_hst.preview.jpg)
3.09.2001
Fast expanding gas clouds mark the end for a central star in the Rotten Egg Nebula. The once-normal star has run out of nuclear fuel, causing the central regions to contract into a white dwarf. Some of the liberated energy causes the outer envelope of the star to expand.
![Парад планетарных туманностей](https://images.astronet.ru/pubd/2003/06/14/0001190906/pn_block.preview.gif)
14.06.2003
What do the Owl, the Cat's Eye, the Ghost of Jupiter, and Saturn have in common? They're all planetary nebulae of course, glowing gaseous shrouds shed by dying sun-like stars as they run out of nuclear fuel.
![Парад планетарных туманностей](https://images.astronet.ru/pubd/2004/10/09/0001199914/pn_block.preview.gif)
3.10.2001
What do the Owl, the Cat's Eye, the Ghost of Jupiter, and Saturn have in common? They're all planetary nebulae of course(!), glowing gaseous shrouds shed by dying sun-like stars as they run out of nuclear fuel.
![Кошачий глаз](https://images.astronet.ru/pubd/2004/09/10/0001199550/catsEye_hst_c1.preview.jpg)
10.09.2004
Staring across interstellar space, the alluring Cat's Eye nebula lies three thousand light-years from Earth. 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.
![M27 - это не комета](https://images.astronet.ru/pubd/2004/08/11/0001199059/m27_vlt_big.preview.jpg)
9.10.1998
While searching the skies above 18th century France for comets, astronomer Charles Messier diligently recorded this object as number 27 on his list of things which are definitely not comets. So what is it?
![M27: это не комета](https://images.astronet.ru/pubd/2002/03/04/0001175059/m27_vlt.preview.jpg)
2.03.2002
While searching the skies above 18th century France for comets, astronomer Charles Messier diligently recorded this object as number 27 on his list of things which are definitely not comets. So what is it?
![NGC 4361: планетарная туманность в форме галактики](https://images.astronet.ru/pubd/2002/08/23/0001179159/ngc4361_keel.preview.gif)
29.12.1995
Glowing in the red light emitted by hydrogen atoms, the planetary nebula NGC 4361 is pictured above. The nebula itself is formed by the outer layers of gas shrugged off by the central star visible in the image.
![IC 418: туманность Спирограф](https://images.astronet.ru/pubd/2004/10/09/0001199924/spirograph_heritage.preview.jpg)
30.09.2001
What is creating the strange texture of IC 418? Dubbed the Spirograph Nebula for its resemblance to drawings from a cyclical drawing tool, planetary nebula IC 418 shows patterns that are not well understood. Perhaps they are related to chaotic winds from the variable central star, which changes brightness unpredictably in just a few hours.
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