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Keywords: CW Leonis, water, star
![Сравнение размеров звезд](https://images.astronet.ru/pubd/2018/06/12/0001415428/star.preview.png)
12.06.2018
How big is our Sun compared to other stars? In dramatic and popular videos featured on YouTube, the relative sizes of planets, stars, and even the universe are shown from smallest to largest. The featured video begins with Earth's Moon and progresses through increasingly larger moons and planets in our Solar System.
![Сбрасывающая массивную оболочку звезда G79.29+0.46](https://images.astronet.ru/pubd/2017/09/25/0001390077/CygnusXzoom_SpitzerWiseSchmidt_960.preview.jpg)
25.09.2017
Stars this volatile are quite rare. Captured in the midst of dust clouds and visible to the right and above center is massive G79.29+0.46, one of less than 100 luminous blue variable stars (LBVs) currently known in our Galaxy.
![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.
![Почему звезды мерцают](https://images.astronet.ru/pubd/2001/03/15/0001166680/AlphaOri_cardiff.preview.gif)
25.07.2000
This is what a star really looks like from the surface of the Earth. To the best the human eye can see, stars are so far away they appear the same as would infinitesimal points of light.
![25 самых ярких звезд на ночном небе](https://images.astronet.ru/pubd/2022/12/18/0001863796/25BrightestStars_Jittasaiyapan_960.preview.jpg)
18.12.2022
Do you know the names of some of the brightest stars? It's likely that you do, even though some bright stars have names so old they date back to near the beginning of written language.
![Марс: оглядываясь на пройденный путь](https://images.astronet.ru/pubd/2004/12/15/0001201485/path_spirit.preview.jpg)
15.12.2004
Pictured above, the path of the robot rover Spirit on Mars can be traced far into the distance. Spirit has now crossed kilometers of plains covered with rocks and sand, approached the lip of a crater 200-meters across, and climbed a series of hills.
![Таяние снега и овраги на Марсе](https://images.astronet.ru/pubd/2003/02/21/0001186814/snowmars_odyssey.preview.jpg)
21.02.2003
Tantalizing images of gullies on Mars have offered striking evidence for recent flows of liquid water. But Mars is too cold and its atmosphere too thin for liquid water to exist on the surface.
![Маленькая звезда](https://images.astronet.ru/pubd/2003/06/24/0001191222/gl623_hst_big.preview.jpg)
5.06.1997
A dim double star system cataloged as Gliese 623 lies 25 light-years from Earth, in the constellation of Hercules. The individual stars of this binary system were distinguished for the first time when the Hubble Space Telescope's Faint Object Camera recorded this image in June 1994.
![Если Земля была бы нейтронной звездой](https://images.astronet.ru/pubd/2003/10/07/0001193878/e_lens.preview.gif)
16.06.1995
If the Earth could somehow be transformed to the ultra-high density of a neutron star , it might appear as it does in the above computer generated figure. Due to the very strong gravitational field, the neutron star distorts light from the background sky greatly. If you look closely, two
![Водяной мир](https://images.astronet.ru/pubd/2003/06/22/0001191125/seaice_sts45_big.preview.jpg)
16.03.1997
Water (Dihydrogen Oxide, H2O) is a truly remarkable chemical compound, fundamental to life on Earth. Earth is the only planet in the Solar System where the surface temperature and pressure allow the three forms of water, solid (ice), liquid (ocean), and gas (water vapor condensing in clouds) to exist simultaneously on its surface.
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