Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.astronet.ru/db/xware/msg/apod/1997-08-24
Дата изменения: Thu Aug 14 18:06:28 2003
Дата индексирования: Sat Dec 29 01:01:57 2007
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Поисковые слова: arp 220
The Snake Nebula in Ophiuchus
Astronomy Picture of the Day
    


The Snake Nebula in Ophiuchus
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The Snake Nebula in Ophiuchus
Credit: B. Wallis and R. Provin
Explanation: What slithers there? The dark winding lanes visible in part of the constellation Ophiuchus belong to the Snake Nebula. The Snake Nebula is a series of dark absorption clouds made up of Interstellar dust. Interstellar dust grains - composed predominantly of carbon - absorb visible starlight and reradiate much of it in the infrared. This absorption causes stars behind the clouds to be obscured from view, hence the appearance of starless voids on the sky.

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Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
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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 - Ophiuchus
Publications with words: nebula - Ophiuchus
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