Credit & Copyright: Jimmy Walker
Explanation:
The W-shaped ridge of emission featured in
this
vivid skyscape is known as the Cygnus Wall.
Part of a larger
emission
nebula with a distinctive outline popularly called
The North America Nebula,
the cosmic ridge spans about 20 light-years.
Constructed using narrowband data to highlight the telltale
reddish glow from
ionized hydrogen
atoms recombining with electrons, the two frame mosaic image follows an
ionization front with fine details of dark, dusty forms in silhouette.
Sculpted
by energetic radiation from the region's young, hot, massive stars,
the dark shapes inhabiting the view are clouds of cool gas and dust
with stars likely forming within.
The North America Nebula itself, NGC 7000,
is about 1,500 light-years away.
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Январь Февраль Март Апрель Май Июнь Июль Август Сентябрь Октябрь Ноябрь Декабрь |
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A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
Публикации с ключевыми словами:
emission nebula - Cygnus Wall - эмиссионная туманность - Лебедь
Публикации со словами: emission nebula - Cygnus Wall - эмиссионная туманность - Лебедь | |
См. также:
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