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Keywords: planetary nebula, NGC 7293
![Жуткий расширяющийся Кошачий глаз](https://images.astronet.ru/pubd/2006/11/13/0001217721/catseye_expand.preview.gif)
16.09.1999
Watch closely. As this animation blinks between two Hubble Space Telescope images of NGC 6543 - the first from 1994 and the second from 1997 - the intricate filaments of this nebula are seen to shift. The shift is due to the actual expansion of this gaseous shroud shed by a dying star!
![Кольцевая туманность M57](https://images.astronet.ru/pubd/2004/07/04/0001198613/m57ring_hst.preview.jpg)
4.07.2004
Except for the rings of Saturn, the Ring Nebula (M57) is probably the most famous celestial band. This planetary nebula's simple, graceful appearance is thought to be due to perspective -- our view from planet Earth looking straight into what is actually a barrel-shaped cloud of gas shrugged off by a dying central star.
![В центре туманности Гантеля](https://images.astronet.ru/pubd/2004/08/11/0001199067/m27center_vlt_big.preview.jpg)
13.10.1998
Here's part of the Dumbbell Nebula that you can't see through binoculars. To see this, we suggest a sophisticated spectrograph attached to a telescope with an 8-meter aperture. Pictured above is the central part of the Dumbbell Nebula, also known as M27 and NGC 6853.
![MyCn18: Туманность Песочные Часы](https://images.astronet.ru/pubd/2001/03/15/0001166625/mycn18_hst_big.preview.jpg)
4.06.2000
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 вокруг нового белого карлика](https://images.astronet.ru/pubd/2005/01/23/0001202491/ngc2440_hst4.preview.jpg)
23.01.2005
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!
![NGC 2440: Оболочка нового белого карлика](https://images.astronet.ru/pubd/2001/03/15/0001166685/ngc2440_hst3_big.preview.jpg)
30.07.2000
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!
![NGC 2440: кокон нового белого карлика](https://images.astronet.ru/pubd/2001/10/02/0001170990/ngc2440_hst4.preview.jpg)
5.08.2001
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!
![M2-9: крылья Бабочки](https://images.astronet.ru/pubd/2003/08/18/0001192457/m2-9_hst.preview.jpg)
23.12.1997
Are stars better appreciated for their art after they die? Actually, stars usually create their most artistic displays as they die. In the case of low-mass stars like our Sun and M2-9 pictured above, the stars transform themselves from normal stars to white dwarfs by casting off their outer gaseous envelopes.
![NGC 5307: симметричная планетарная туманность](https://images.astronet.ru/pubd/2003/08/18/0001192465/ngc5307_hst_big.preview.jpg)
31.12.1997
Some stellar nebulae are strangely symmetric. For example, every major blob of gas visible on the upper left of NGC 5307 appears to have a counterpart on the lower right. This picture taken by the Hubble Space Telescope was released last week. NGC 5307 is an example of a planetary nebula with a spiral shape.
![Гамбургер Гомеша: протопланетарная туманность](https://images.astronet.ru/pubd/2002/08/07/0001178819/hamburger_hst.preview.jpg)
7.08.2002
What, in heaven, is that? Sometimes astronomers see things on the sky they don't immediately understand. In 1985 this happened to Arturo Gomez, and the object became known as Gomez's Hamburger for its distinctive yet familiar shape.
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