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You entered: H-alpha
![Южное небо в H-alpha](https://images.astronet.ru/pubd/2002/01/29/0001174542/halpha_shassa.preview.jpg)
29.01.2002
A robotic telescope with red sunglasses in Chile has been photographing the entire southern sky for years. The result, shown above, is the most complete sky map of the most common visible light emitted from the most abundant element in our Galaxy: hydrogen. A very specific red color emitted by warm ionized hydrogen was observed.
![Шлем Тора в линии H альфа](https://images.astronet.ru/pubd/2006/02/02/0001211333/thor_goldman_c40.preview.jpg)
2.02.2006
Near picture center, the helmet-shaped structure with wing-like appendages is popularly called Thor's Helmet. Cataloged as NGC 2359, the striking nebula is located about 15,000 light-years away in the constellation Canis Major.
![Перигелий 2023 года и Солнце](https://images.astronet.ru/pubd/2023/01/14/0001871678/Sol3Jan2023web1024.preview.jpg)
14.01.2023
Perihelion for 2023, Earth's closest approach to the Sun, was on January 4 at 16:17 UTC. That was less than 24 hours after this sharp image of the Sun's disk was recorded with telescope and H-alpha filter from Sidney, Australia, planet Earth.
![Водород и пыль в туманности Розетка](https://images.astronet.ru/pubd/2005/12/23/0001210539/redrosedust_wright_f13.preview.jpg)
23.12.2005
At the edge of a large molecular cloud in Monoceros, some 3,000 light years away, dark filaments of dust are silhouetted by luminous hydrogen gas. The close up view of the Rosette Nebula...
![IC 1396 крупным планом](https://images.astronet.ru/pubd/2005/09/30/0001208268/ic1396b_wright_f13.preview.jpg)
30.09.2005
Clouds of glowing hydrogen gas mingle ominously with dark dust lanes in this close-up of IC 1396, an active star forming region some 2,000 light years away in the constellation Cepheus. In this and other similar emission nebulae, energetic ultraviolet light from a hot young star strips electrons from the surrounding hydrogen atoms.
![Водородная Трехдольная туманность](https://images.astronet.ru/pubd/2004/03/26/0001197318/trifid_david_big.preview.gif)
28.08.1998
Clouds of glowing hydrogen gas mingle with dark dust lanes in the Trifid Nebula, a star forming region in the constellation Sagittarius. In this and other similar emission nebulae, energetic ultraviolet light from an embedded hot young star strips electrons from the surrounding hydrogen atoms.
![Меркурий и хромосфера](https://images.astronet.ru/pubd/2006/11/10/0001217565/MercuryTransit_jones_rc62.preview.jpg)
10.11.2006
Enjoying Wednesday's transit of Mercury from Dallas, Texas, astronomer Phil Jones recorded this detailed image of the Sun. Along with a silhouette of the innermost planet, a network of cells and dark filaments can be seen against a bright solar disk with spicules and prominences along the Sun's edge.
![Прохождение Меркурия](https://images.astronet.ru/pubd/2016/05/12/0001362520/HB-G-1254amToMcrop1024h.preview.jpg)
12.05.2016
On May 9, the diminutive disk of Mercury spent about seven and a half hours crossing in front of the Sun as viewed from the general vicinity of Earth. It was the second of 14 transits of the Solar System's innermost planet in the 21st century.
![Призраки в Кассиопее](https://images.astronet.ru/pubd/2019/10/25/0001520441/IC59IC63TheGhostsOfCassiopeiaTommasoStella2019_1024.preview.jpg)
25.10.2019
These bright rims and flowing shapes look ghostly on a cosmic scale. A telescopic view toward the constellation Cassiopeia, the colorful skyscape features swept-back, comet-shaped clouds IC 59 (left) and IC 63. About 600 light-years distant, the clouds aren't actually ghosts.
![Туманности IC 59 и IC 63 в Кассиопее](https://images.astronet.ru/pubd/2011/11/03/0001254459/IC59IC63crawford600h.preview.jpg)
3.11.2011
These bright rims and flowing shapes suggest to some melting ice cream on a cosmic scale. Looking toward the constellation Cassiopeia, the colorful (zoomable) skyscape features the swept back, comet-shaped clouds IC 59 (left) and IC 63.
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