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April 1, 2011 05:47 pm PDT
Original Link: http://feeds.boingboing.net/~r/boingboing/iBag/~3/Nno9e5ljT9o/space-image-of-the-d.html
Space image of the day: swirling palette of star-forming clouds
Here's a beautiful new image just released today from NASA's Wide-field Infrared Explorer, or WISE: the busy star-forming complex called Rho Ophiuch, which is one of the closest star-forming complexes to Earth. More about the image: The amazing variety of different colors seen in this image represent different wavelengths of infrared light. The bright white nebula in the center of the image is glowing due to heating from nearby stars, resulting in what is called an emission nebula. The same is true for most of the multi-hued gas prevalent throughout the entire image, including the bluish bow-shaped feature near the bottom right. The bright red area in the bottom right is light from the star in the center - Sigma Scorpii - that is reflected off of the dust surrounding it, creating what is called a reflection nebula. And the much darker areas scattered throughout the image are pockets of cool dense gas that block out the background light, resulting in absorption (or 'dark') nebulae. WISE's longer wavelength detectors can typically see through dark nebulae, but these are exceptionally opaque....
Original Link: http://feeds.boingboing.net/~r/boingboing/iBag/~3/Nno9e5ljT9o/space-image-of-the-d.html
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