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Keywords: open cluster, M 46, planetary nebula
![Туманность Медуза](https://images.astronet.ru/pubd/2022/03/25/0001822872/Abell21-Drudis1024.preview.jpg)
26.03.2021
Braided and serpentine filaments of glowing gas suggest this nebula's popular name, The Medusa Nebula. Also known as Abell 21, this Medusa is an old planetary nebula some 1,500 light-years away in the constellation Gemini. Like its mythological namesake, the nebula is associated with a dramatic transformation.
![Двойное звездное скопление в Персее](https://images.astronet.ru/pubd/2022/11/22/0001858191/DoubleCluster_Lease_960.preview.jpg)
22.11.2022
Few star clusters this close to each other. Visible to the unaided eye from dark sky areas, it was cataloged in 130 BC by Greek astronomer Hipparchus. Some 7,000 light-years away, this pair...
![NGC 7789: Роза Каролины](https://images.astronet.ru/pubd/2024/07/09/0001932903/NGC7789_difusco1024c.preview.jpg)
6.07.2024
Found among the rich starfields of the Milky Way, star cluster NGC 7789 lies about 8,000 light-years away toward the constellation Cassiopeia. A late 18th century deep sky discovery of astronomer Caroline Lucretia Herschel, the cluster is also known as Caroline's Rose.
![Туманность Медуза](https://images.astronet.ru/pubd/2012/10/26/0001271596/MedusaCrawford_NC900.preview.jpg)
25.10.2012
Braided, serpentine filaments of glowing gas suggest this nebula's popular name, The Medusa Nebula. Also known as Abell 21, this Medusa is an old planetary nebula some 1,500 light-years away in the constellation Gemini. Like its mythological namesake, the nebula is associated with a dramatic transformation.
![Планетарная туманность Красный Паук](https://images.astronet.ru/pubd/2012/10/31/0001271778/redspider_milovic_960.preview.jpg)
29.10.2012
Oh what a tangled web a planetary nebula can weave. The Red Spider Planetary Nebula shows the complex structure that can result when a normal star ejects its outer gases and becomes a white dwarf star.
![NGC 2440: кокон нового белого карлика](https://images.astronet.ru/pubd/2023/12/24/0001915166/ngc2440e_hst_960.preview.jpg)
24.12.2023
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.
![NGC 3572 и Южные Головастики](https://images.astronet.ru/pubd/2022/05/06/0001831018/NGC3572SouthernTadpolesCarlosTaylor1024.preview.jpg)
6.05.2022
This cosmic skyscape features glowing gas and dark dust clouds along side the young stars of NGC 3572. A beautiful emission nebula and star cluster it sails far southern skies within the nautical constellation Carina.
![NGC 602 и за ним](https://images.astronet.ru/pubd/2021/05/16/0001739502/Ngc602_Hubble_960.preview.jpg)
16.05.2021
The clouds may look like an oyster, and the stars like pearls, but look beyond. Near the outskirts of the Small Magellanic Cloud, a satellite galaxy some 200 thousand light-years distant, lies 5 million year young star cluster NGC 602.
![NGC 602: звездное скопление Устрица](https://images.astronet.ru/pubd/2024/07/02/0001932667/Ngc602_Hubble_960.preview.jpg)
2.07.2024
The clouds may look like an oyster, and the stars like pearls, but look beyond. Near the outskirts of the Small Magellanic Cloud, a satellite galaxy some 200 thousand light-years distant, lies this 5 million year old star cluster NGC 602.
![Три скопления в Корме](https://images.astronet.ru/pubd/2022/02/18/0001813459/ThreeClustersPuppis1024.preview.jpg)
18.02.2022
Galactic or open star clusters are young. The swarms of stars are born together near the plane of the Milky Way, but their numbers steadily dwindle as cluster members are ejected by galactic tides and gravitational interactions.
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