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Keywords: planetary nebula, supernova remnant
![SN 1006: космическая лента — остаток сверхновой](https://images.astronet.ru/pubd/2008/09/15/0001229554/sn1006_hst.preview.jpg)
15.09.2008
What created this unusual space ribbon? Most assuredly, one of the most violent explosions ever witnessed by ancient humans. Back in the year 1006 AD, light reached Earth from a stellar explosion...
![NGC 6960: туманность Ведьмина Метла](https://images.astronet.ru/pubd/2008/08/19/0001229193/ngc6960_block.preview.jpg)
19.08.2008
Ten thousand years ago, before the dawn of recorded human history, a new light must suddenly have appeared in the night sky and faded after a few weeks. Today we know this light was an exploding star and record the colorful expanding cloud as the Veil Nebula.
![Планетарная туманность Бабочка](https://images.astronet.ru/pubd/2003/08/17/0001192389/m29_hjh_big.preview.gif)
21.10.1997
As stars age, they throw off their outer layers. Sometimes a highly symmetric gaseous planetary nebula is created, as is the case in M2-9, also called the Butterfly. Most planetary nebulae show this bipolar appearance, although some appear nearly spherical.
![NGC 7293: туманность Улитка](https://images.astronet.ru/pubd/2007/08/03/0001222945/helixdeep_hambsch720.preview.jpg)
3.08.2007
A mere seven hundred light years from Earth, in the constellation Aquarius, a sun-like star is dying. Its last few thousand years have produced the Helix Nebula (NGC 7293), a well studied and nearby example of a Planetary Nebula, typical of this final phase of stellar evolution.
![Петля Лебедя](https://images.astronet.ru/pubd/2003/08/09/0001192242/CygnusLoop_hst.preview.gif)
8.08.1998
15,000 years ago a star in the constellation of Cygnus exploded -- the shockwave from this supernova explosion is still expanding into interstellar space! The collision of this fast moving wall of gas with...
![Петля Лебедя](https://images.astronet.ru/pubd/2001/06/24/0001169537/CygnusLoop_hst.preview.jpg)
23.06.2001
The shockwave from a 20,000 year-old supernova in the constellation of Cygnus supernova explosion is still expanding into interstellar space. The collision of this fast moving wall of gas with a stationary cloud...
![Петля Лебедя](https://images.astronet.ru/pubd/2003/08/09/0001192243/CygnusLoop_hst_big.preview.gif)
3.08.1997
15,000 years ago a star in the constellation of Cygnus exploded -- the shockwave from this supernova explosion is still expanding into interstellar space! The collision of this fast moving wall of gas with...
![Петля Лебедя](https://images.astronet.ru/pubd/2006/11/14/0001217819/CygnusLoop_hst_big.preview.gif)
25.07.1999
The shockwave from a 20,000 year-old supernova in the constellation of Cygnus supernova explosion is still expanding into interstellar space. The collision of this fast moving wall of gas with a stationary cloud...
![Остаток сверхновой N132D в видимом свете и рентгеновских лучах](https://images.astronet.ru/pubd/2005/10/25/0001208957/n132d_heritage.preview.jpg)
25.10.2005
Thousands of years after a star exploded, its expanding remnant still glows brightly across the spectrum. Such is the case with N132D, a supernova remnant located in the neighboring Large Magellanic Cloud (LMC) galaxy. The expanding shell from this explosion now spans 80 light-years and has swept up about 600 Suns worth of mass.
![Рентгеновский блеск кошачьего глаза](https://images.astronet.ru/pubd/2001/01/11/0001165529/catseye_composite.preview.jpg)
11.01.2001
Haunting patterns within planetary nebula NGC 6543 readily suggest its popular moniker -- the Cat's Eye nebula. In 1995, a stunning false-color optical image from the Hubble Space Telescope detailed the swirls of this glowing nebula, known to be the gaseous shroud expelled from a dying sun-like star about 3,000 light-years from Earth.
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