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Astronomy Picture of the Day -- Reflection Nebula vdB1
| October 26, 2012
| (see photo credit)
Posted on 10/26/2012 3:44:26 AM PDT by SunkenCiv
Explanation: Every book has a first page and every catalog a first entry. And so this lovely blue cosmic cloud begins the van den Bergh Catalog (vdB) of stars surrounded by reflection nebulae. Interstellar dust clouds reflecting the light of the nearby stars, the nebulae usually appear blue because scattering by the dust grains is more effective at shorter (bluer) wavelengths. The same type of scattering gives planet Earth its blue daytime skies. Van den Bergh's 1966 list contains a total of 158 entries more easily visible from the northern hemisphere, including bright Pleiades cluster stars and other popular targets for astroimagers. Less than 5 light-years across, VdB1 lies about 1,600 light-years distant in the constellation Cassiopeia. Also on this scene, two intriguing nebulae at the right show loops and outflow features associated with the energetic process of star formation. Within are extremely young variable stars V633 Cas (top) and V376 Cas.
(Excerpt) Read more at 126.96.36.199 ...
TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: apod; astronomy; cassiopeia; reflectionnebula; science; v376cas; v633cas; vandenbergh; vdb1
posted on 10/26/2012 3:44:40 AM PDT
To: brytlea; cripplecreek; decimon; bigheadfred; KoRn; Grammy; married21; steelyourfaith; Mmogamer; ...
posted on 10/26/2012 3:46:28 AM PDT
That tear in the space/time continuum on the right side is intriguing
posted on 10/26/2012 4:51:37 AM PDT
(Firearms and ammunition...the only growing industries under the Obama regime.)
For believing in evolution you really have to wonder why the stars are soo far apart.
posted on 10/26/2012 5:24:00 AM PDT
(If we knew what we know now in Oct would we do anything different?)
posted on 10/26/2012 3:12:00 PM PDT
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