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Astronomy Picture of the Day
Barnard's Loop around the Horsehead Nebula
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zorg.ch
#85773
by
[z]Barbara Harris
@
18.04.2006 00:00
- nach oben -
Barnard's Loop around the Horsehead Nebula
Explanation:
Why is the
Horsehead Nebula
surrounded by a bubble?
Although glowing like an
emission nebula
,
the origin of the
bubble
, known as
Barnard's Loop
, is currently unknown.
Progenitor hypotheses include the
wind
s
from bright Orion stars and the
supernovas
of stars long gone.
Barnard's Loop
is too faint to be identified with the unaided eye.
The nebula
was discovered only in 1895 by
E. E. Barnard
on long duration film exposures.
The above image was taken in a single
specific color
emitted by
hydrogen
to bring out detail.
To the left of the
Horsehead Nebula
,
visible as the small dark indentation
near the image top, is the photogenic
Flame Nebula
.
Credit & Copyright
zorg.ch
#85774
by
[z]Duke
@
18.04.2006 00:09
- nach oben -
gottseidank posted d' barbara hie und da mol no, süsch wür jo gar nüt laufe.
zorg.ch
#85775
by
Squeezer
@
18.04.2006 05:40
- nach oben -
säg nünt...