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Astronomy Picture of the Day
The Milky Way in Stars and Dust
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zorg.ch
#80603
by
[z]Barbara Harris
@
05.10.2005 00:00
- nach oben -
The Milky Way in Stars and Dust
Explanation:
The disk of our Milky Way Galaxy is home to hot nebulae, cold dust, and billions of stars.
This disk can be seen from a dark location on Earth as a
band
of diffuse light
across the sky
.
This band crosses the sky in dramatic fashion in the
above
series of wide angle sky exposures from
Chile
.
The deepness of the exposures also brings to light a vast network of complex
dust filaments
.
Dust
is so plentiful that it obscures our
Galaxy's center
in visible light,
hiding its true direction until
discovered by other means
early last century.
The
Galactic Center
, though, is
visible above
as the thickest part of the disk.
The diffuse glow comes from billions of older, fainter stars like
our Sun
,
which are typically much older than the dust or any of the nebulae.
One particularly photogenic area of darkness is the
Pipe Nebula
visible above the Galactic Center.
Dark dust
is not the
dark matter
than dominates our Galaxy -- that
dark matter
remains in a form
yet unknown
.
Credit & Copyright