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Astronomy Picture of the Day
The Cocoon Nebula from CFHT
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#105296
by
[z]Barbara Harris
@
15.01.2008 00:00
- nach oben -
The Cocoon Nebula from CFHT
Explanation: What creates the colors of the Cocoon Nebula? The
Cocoon Nebula
, cataloged as
IC
5146, is a strikingly beautiful nebula located about 4,000
light years
away toward the
constellation
of the Swan (
Cygnus
). Inside the
Cocoon
Nebula is a newly developing
open cluster
of stars. Like other
stellar nurseries
, the Cocoon Nebula holds, at the same time, a bright red
emission nebula
, blue
reflection nebulas
, and dark
absorption nebulas
. Given different mixtures, these three processes create a host of colors in
this image
taken recently by the
Canada-France-Hawaii Telescope
(CFHT) in
Hawaii
, USA.
Speculation based on recent measurements
holds that the massive star towards the left of
the picture
opened a hole in an existing
molecular cloud
through which much of the glowing material flows. The same star, which formed about 100,000 years ago, now provides the energy source for much of the emitted and
reflected light
from this nebula.
Credit & Copyright