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Keywords: NGC 6559, reflection nebula, emission nebula
![Вдоль стены в Лебеде](https://images.astronet.ru/pubd/2014/07/03/0001316451/CygnusWallMP950.preview.jpg)
3.07.2014
The prominent ridge of emission featured in this vivid skyscape is known as the Cygnus Wall. Part of a larger emission nebula with a distinctive shape popularly called The North America Nebula, the ridge spans about 10 light-years along an outline that suggests the western coast of Mexico.
![Неожиданные облака в направлении на галактику Андромеды](https://images.astronet.ru/pubd/2023/01/17/0001872567/M31OiiiArc_Strottner_960.preview.jpg)
17.01.2023
Why are there oxygen-emitting arcs near the direction of the Andromeda galaxy? No one is sure. The gas arcs, shown in blue, were discovered and first confirmed by amateur astronomers just last year.
![В сердце туманности Сердце](https://images.astronet.ru/pubd/2022/02/14/0001812173/HeartB_Jensen_960.preview.jpg)
14.02.2022
What excites the Heart Nebula? First, the large emission nebula dubbed IC 1805 looks, in whole, like a human heart. Its shape perhaps fitting of the Valentine's Day, this heart glows brightly in red light emitted by its most prominent element: excited hydrogen.
![NGC 6559: к востоку от Лагуны](https://images.astronet.ru/pubd/2021/10/07/0001769837/NGC6559Sartori1024.preview.jpg)
7.10.2021
Slide your telescope just east of the Lagoon Nebula to find this alluring field of view in the rich starfields of the constellation Sagittarius toward the central Milky Way. Of course the Lagoon nebula is also known as M8, the eighth object listed in Charles Messier's famous catalog of bright nebulae and star clusters.
![NGC 7822 в Цефее](https://images.astronet.ru/pubd/2022/01/20/0001804286/IMG_9447_1024.preview.jpg)
20.01.2022
Hot, young stars and cosmic pillars of gas and dust seem to crowd into NGC 7822. At the edge of a giant molecular cloud toward the northern constellation Cepheus, the glowing star forming region lies about 3,000 light-years away. Within the nebula, bright edges and dark shapes stand out in this colorful telescopic skyscape.
![Трехдольная туманность: звезды и пыль](https://images.astronet.ru/pubd/2009/07/07/0001235451/m20_block.preview.jpg)
7.07.2009
Unspeakable beauty and unimaginable bedlam can be found together in the Trifid Nebula. Also known as M20, this photogenic nebula is visible with good binoculars towards the constellation of Sagittarius. The energetic processes of star formation create not only the colors but the chaos. The red-glowing gas results from high-energy starlight striking interstellar hydrogen gas.
![NGC 1579: северная Трехраздельная туманность](https://images.astronet.ru/pubd/2009/01/30/0001233027/NGC1579WebF2_goldman_c800.preview.jpg)
30.01.2009
Colorful NGC 1579 resembles the better known Trifid Nebula, but lies much farther north in planet Earth's sky, in the heroic constellation Perseus. About 2,100 light-years away and 3 light-years across...
![M27: не комета](https://images.astronet.ru/pubd/2011/09/01/0001253522/M27NarrowBroad_pugh900.preview.jpg)
1.09.2011
While hunting for comets in the skies above 18th century France, astronomer Charles Messier diligently kept a list of the things he encountered that were definitely not comets. This is number 27 on his now famous not-a-comet list.
![Гало туманности NGC 6164](https://images.astronet.ru/pubd/2012/10/28/0001271646/NGC6164Web_goldman_c800.preview.jpg)
27.10.2012
Beautiful emission nebula NGC 6164 was created by a rare, hot, luminous O-type star, some 40 times as massive as the Sun. Seen at the center of the cosmic cloud, the star is a mere 3 to 4 million years old.
![Глубокое поле: туманность Сердце](https://images.astronet.ru/pubd/2023/12/13/0001914284/Heart_TelLiveOstling_960.preview.jpg)
13.12.2023
What excites the Heart Nebula? First, the large emission nebula on the left, catalogued as IC 1805, looks somewhat like a human heart. The nebula glows brightly in red light emitted by its most prominent element, hydrogen, but this long-exposure image was also blended with light emitted by silicon (yellow) and oxygen (blue).
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