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Астронет: Астрономическая картинка дня Туманность Змея в созвездии Змееносца http://variable-stars.ru/db/msg/1161654/eng |
Credit & Copyright: B. Wallis and R.
Provin
Explanation:
What slithers there? The dark curly lanes visible in part of the
constellation
Ophiuchus
belong to the Snake Nebula. The Snake Nebula is a series of
dark absorption clouds.
Interstellar
dust grains - composed predominantly
of carbon - absorb visible starlight and reradiate much of it in the infrared. Infrared is a band of light so red humans can't see it. This
absorption causes stars in the background to be blocked from our view - and
hence the appearance of noticeable voids on the sky.
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.