Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.astronet.ru/db/xware/msg/1162642
Дата изменения: Sat Nov 4 02:13:14 2006
Дата индексирования: Tue Oct 2 18:25:54 2012
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Поисковые слова: virgo cluster
Reflection Nebula M78
Astronomy Picture of the Day
    


Reflection Nebula M78
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Reflection Nebula M78
Credit & Copyright: Sloan Digital Sky Survey Collaboration
Explanation: An eerie blue glow and ominous columns of dark dust highlight M78, a bright reflection nebula in the constellation of Orion. The dust not only absorbs light, but also reflects the light of several bright blue stars that formed recently in the nebula. The same type of scattering that colors the daytime sky further enhances the blue color. M78 is about five light-years across and visible through a small telescope. M78 appears above only as it was 1600 years ago, however, because that is how long it takes light to go from there to here. M78 belongs to the larger Orion Molecular Cloud Complex that contains the Great Nebula in Orion and the Horsehead Nebula.

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Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.

Based on Astronomy Picture Of the Day

Publications with keywords: nebula - M 78 - M 7 - reflection nebula
Publications with words: nebula - M 78 - M 7 - reflection nebula
See also:
All publications on this topic >>