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Reflection nebulae – The Pleiades
•Cluster of new stars
–Visible to unaided eye
in western Taurus
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–Stars form in clusters – most of which slowly spread apart.
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•Reflection nebula is reflected sunlight
–Can see stellar-like spectra with absorption lines
–Blue light scattered more efficiently than red
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•Pleiades didn’t form here – just moving through this cloud of dust.
From our text:  Horizons, by Sees