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Keyword: hydrogen
![Облака Андромеды](https://images.astronet.ru/pubd/2017/01/04/0001373920/RBA_DS_CloudsOfAndromeda2_960ex.preview.jpg)
4.01.2017
The beautiful Andromeda Galaxy is often imaged by planet Earth-based astronomers. Also known as M31, the nearest large spiral galaxy is a familiar sight with dark dust lanes, bright yellowish core, and spiral arms traced by blue starlight.
![M10: водород, гелий, звезды](https://images.astronet.ru/pubd/2005/07/22/0001207332/m10_crednerkohle_big.preview.jpg)
12.03.1999
Stars like the Sun use hydrogen for fuel, "burning" hydrogen into helium at their cores through nuclear fusion. But what happens when that hydrogen runs out? For a while, hydrogen burns in a shell surrounding the stellar core and the star expands to become a red giant.
![Водородные облака в M33](https://images.astronet.ru/pubd/2013/12/26/0001297797/M33block_Ha_enhanced900.preview.jpg)
26.12.2013
Gorgeous spiral galaxy M33 seems to have more than its fair share of glowing hydrogen gas. A prominent member of the local group of galaxies, M33 is also known as the Triangulum Galaxy and lies about 3 million light-years distant.
![Облака Андромеды](https://images.astronet.ru/pubd/2018/01/08/0001395981/M31Clouds_DLopez_960.preview.jpg)
8.01.2018
What are those red clouds surrounding the Andromeda galaxy? This galaxy, M31, is often imaged by planet Earth-based astronomers. As the nearest large spiral galaxy, it is a familiar sight with dark dust lanes, bright yellowish core, and spiral arms traced by clouds of bright blue stars.
![HI4PI: водородное небо](https://images.astronet.ru/pubd/2016/10/24/0001370762/HydrogenSky_HI4PI_1080.preview.jpg)
24.10.2016
Where are the Milky Way's gas clouds and where are they going? To help answer this question, a new highest-resolution map of the sky in the universe's most abundant gas -- hydrogen -- has been completed and recently released, along with its underlying data.
![Облака водорода в M33](https://images.astronet.ru/pubd/2016/10/07/0001370155/m33_brc_lrgb_ha_1024Pivato.preview.jpg)
7.10.2016
Gorgeous spiral galaxy M33 seems to have more than its fair share of glowing hydrogen gas. A prominent member of the local group of galaxies, M33 is also known as the Triangulum Galaxy and lies about 3 million light-years distant.
![Колыбель в Орионе](https://images.astronet.ru/pubd/2007/01/25/0001220493/orioncradle_hallas_r780.preview.jpg)
25.01.2007
Cradled in glowing hydrogen, stellar nurseries in Orion lie at the edge of a giant molecular cloud some 1,500 light-years away. This breath-taking view spans about 13 degrees across the center of the well-known constellation with the Great Orion Nebula, the closest large star forming region, just right of center.
![Туманность NGC 6914](https://images.astronet.ru/pubd/2011/03/04/0001250189/NGC6914_peris_600h.preview.jpg)
4.03.2011
A dramatic study in contrasts, this colorful skyscape features stars, dust, and glowing gas in NGC 6914. The complex of nebulae lies some 6,000 light-years away, toward the high-flying northern constellation Cygnus and the plane of our Milky Way Galaxy.
![Туманность Чайка](https://images.astronet.ru/pubd/2011/01/12/0001249181/SeaGullLHaRGB_sidonio800.preview.jpg)
12.01.2011
This broad expanse of glowing gas and dust presents a bird-like visage to astronomers from planet Earth, suggesting its popular moniker - The Seagull Nebula. This portrait of the cosmic bird covers a 1.6 degree wide swath across the plane of the Milky Way, near the direction of Sirius, alpha star of the constellation Canis Major.
![Тень кометы](https://images.astronet.ru/pubd/2006/03/08/0001212120/swan_hbshadow_big.preview.jpg)
2.07.1999
Hale-Bopp, the Great Comet of 1997, may have been the most viewed comet in history - visible even from bright metropolitan skies. Astronomers are now reporting that this magnificent comet also cast a shadow against the glare of the solar system's ultraviolet haze.
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