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Астронет: Астрономическая картинка дня M78 и отражающие свет облака пыли http://variable-stars.ru/db/msg/1305660/eng |
Credit & Copyright: Ian Sharp
Explanation:
An eerie blue glow and ominous columns of
dark dust highlight M78 and other bright
reflection nebula
in the constellation of Orion.
The dark filamentary
dust not only absorbs light, but also reflects the
light of several bright blue stars that
formed recently in the nebula.
Of the two reflection nebulas
pictured above, the more famous nebula is
M78, in the image center, while
NGC 2071 can be seen to its lower left.
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.