Credit & Copyright: International Gemini Observatory/NOIRLab/NSF/AURA;
Image Processing: J. Miller & M. Rodriguez (International
Gemini Observatory/NSF NOIRLab), T.A. Rector (University
of Alaska Anchorage/NSF NOIRLab), D.
de Martin & M. Zamani (NSF
NOIRLab)
Text: Cecilia Chirenti (NASA GSFC, UMCP, CRESST II)
Explanation:
What do you see in this crystal ball?
The featured image
shows NGC 1514, known as the Crystal
Ball Nebula, observed by the Gemini
North telescope on Maunakea,
in Hawai'i.
NGC 1514 is 1,500 light-years away and was discovered by William
Herschel in 1790.
This planetary nebula
is formed when a star becomes a red
giant and ejects its outer gas layers.
The ejected shell of gas is heated up by the core of the star to temperatures
hotter than the surface of our Sun:
that makes the gas shine, creating beautiful images like
this one.
The slightly asymmetrical shape of the Crystal Ball Nebula reveals a secret:
the bright star in the center has a companion.
As the two stars orbit each other with a period of about nine
years, they shape the gas around them.
In about 10,000
- 25,000 years the nebula will be dissipated
by their stellar winds.
Text: Cecilia Chirenti (NASA GSFC, UMCP, CRESST II)
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Публикации с ключевыми словами:
planetary nebula - Планетарная туманность
Публикации со словами: planetary nebula - Планетарная туманность | |
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