SPACE PHOTOS THIS WEEK: Rosy Haze, Black Hole Jet, More

SPACE PHOTOS THIS WEEK: Rosy Haze, Black Hole Jet, More
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December 1, 2009--Stars sparkle against a rosy haze in a new closeup picture of the Iris nebula taken with the Hubble Space Telescope.

Although some nebulae are hot enough to generate their own light, cooler nebulae--including Iris--are visible because they scatter and reflect light from nearby stars. These so-called reflection nebulae usually appear blue, but an as yet unidentified chemical gives parts of the Iris nebula a reddish hue.
—Image courtesy NASA & ESA
 
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