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Keywords: planetary nebula, supernova remnant
![Туманность Кошачий Глаз](https://images.astronet.ru/pubd/2007/05/14/0001221996/catseye2_hst.preview.jpg)
13.05.2007
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.
![Кольцевая туманность М57](https://images.astronet.ru/pubd/2001/03/15/0001166670/m57ring_hst_big.preview.jpg)
16.07.2000
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.
![NGC 2440: кокон нового белого карлика](https://images.astronet.ru/pubd/2023/12/24/0001915166/ngc2440e_hst_960.preview.jpg)
23.12.2023
What's that in the center? Like a butterfly, a white dwarf star begins its life by casting off a cocoon of gas 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 cocoon of all.
![M2-9: крылья туманности Бабочка](https://images.astronet.ru/pubd/2020/09/13/0001694579/M2D9_HubbleSchmidt_985.preview.jpg)
12.09.2020
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 here, the stars transform themselves from normal stars to white dwarfs by casting off their outer gaseous envelopes.
![Остаток сверхновой туманность Мозг](https://images.astronet.ru/pubd/2021/01/18/0001720726/Medulla_Croman_960.preview.jpg)
17.01.2021
What powers this unusual nebula? CTB-1 is the expanding gas shell that was left when a massive star toward the constellation of Cassiopeia exploded about 10,000 years ago. The star likely detonated when it ran out of elements, near its core, that could create stabilizing pressure with nuclear fusion.
![Гало вокруг Кошачьего Глаза](https://images.astronet.ru/pubd/2020/06/08/0001665482/catseye2_not_960.preview.jpg)
6.06.2020
The Cat's Eye Nebula (NGC 6543) is one of the best known planetary nebulae in the sky. Its haunting symmetries are seen in the very central region of this stunning false-color picture, processed...
![Планетарная туманность Эйбелл 78](https://images.astronet.ru/pubd/2020/10/16/0001702081/PN_Abell78-1_1024c1.preview.jpg)
15.10.2020
Planetary nebula Abell 78 stands out in this colorful telescopic skyscape. In fact the colors of the spiky Milky Way stars depend on their surface temperatures, both cooler (yellowish) and hotter (bluish) than the Sun.
![Удивительная спираль в LL Пегаса](https://images.astronet.ru/pubd/2021/11/29/0001789342/LLPegasi_HubbleLodge_960.preview.jpg)
28.11.2021
What created the strange spiral structure on the upper left? No one is sure, although it is likely related to a star in a binary star system entering the planetary nebula phase, when its outer atmosphere is ejected.
![Бурная активность остатка сверхновой N63A](https://images.astronet.ru/pubd/2005/06/08/0001206192/n63a_hst.preview.jpg)
8.06.2005
What has this supernova left behind? As little as 2,000 years ago, light from a massive stellar explosion in the Large Magellanic Clouds (LMC) first reached planet Earth. The LMC is a close...
![NGC 2392: планетарная туманность с двойной оболочкой](https://images.astronet.ru/pubd/2020/02/16/0001613528/NGC2392_HubbleSchmidt_960.preview.jpg)
15.02.2020
To some, this huge nebula resembles a person's head surrounded by a parka hood. In 1787, astronomer William Herschel discovered this unusual planetary nebula: NGC 2392. More recently, the Hubble Space Telescope imaged the nebula in visible light, while the nebula was also imaged in X-rays by the Chandra X-ray Observatory.
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