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Astronomy Picture of the Day
M78 and Reflecting Dust Clouds in Orion
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#106144
by
[z]Barbara Harris
@
19.03.2008 00:00
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M78 and Reflecting Dust Clouds in Orion
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, on the upper right, 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
.
digg_url = 'http://apod.nasa.gov/apod/ap080318.html'; digg_skin = 'compact';
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