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Making a spectacle of star formation in Orion

Date:
July 1, 2011
Source:
NASA/Jet Propulsion Laboratory
Summary:
Looking like a pair of eyeglasses only a rock star would wear, a new nebula view brings into focus a murky region of star formation. NASA's Spitzer Space Telescope exposes the depths of this dusty nebula with its infrared vision, showing stellar infants that are lost behind dark clouds when viewed in visible light.

Best known as Messier 78, the two round greenish nebulae are actually cavities carved out of the surrounding dark dust clouds.
Credit: NASA/JPL-Caltech

Looking like a pair of eyeglasses only a rock star would wear, a new nebula view brings into focus a murky region of star formation. NASA's Spitzer Space Telescope exposes the depths of this dusty nebula with its infrared vision, showing stellar infants that are lost behind dark clouds when viewed in visible light.

Best known as Messier 78, the two round greenish nebulae are actually cavities carved out of the surrounding dark dust clouds. The extended dust is mostly dark, even to Spitzer's view, but the edges show up in mid-wavelength infrared light as glowing, red frames surrounding the bright interiors. Messier 78 is easily seen in small telescopes in the constellation of Orion, just to the northeast of Orion's belt, but looks strikingly different, with dominant, dark swaths of dust. Spitzer's infrared eyes penetrate this dust, revealing the glowing interior of the nebulae.

The light from young, newborn stars are starting to carve out cavities within the dust, and eventually, this will become a larger nebula like the "green ring" imaged by Spitzer (see http://www.jpl.nasa.gov/news/news.cfm?release=2011-183).

A string of baby stars that have yet to burn their way through their natal shells can be seen as red pinpoints on the outside of the nebula. Eventually these will blossom into their own glowing balls, turning this two-eyed eyeglass into a many-eyed monster of a nebula.

This is a three-color composite that shows infrared observations from two Spitzer instruments. Blue represents 3.6- and 4.5-micron light, and green shows light of 5.8 and 8 microns, both captured by Spitzer's infrared array camera. Red is 24-micron light detected by Spitzer's multiband imaging photometer.


Story Source:

The above story is based on materials provided by NASA/Jet Propulsion Laboratory. Note: Materials may be edited for content and length.


Cite This Page:

NASA/Jet Propulsion Laboratory. "Making a spectacle of star formation in Orion." ScienceDaily. ScienceDaily, 1 July 2011. <www.sciencedaily.com/releases/2011/06/110630162311.htm>.
NASA/Jet Propulsion Laboratory. (2011, July 1). Making a spectacle of star formation in Orion. ScienceDaily. Retrieved April 20, 2014 from www.sciencedaily.com/releases/2011/06/110630162311.htm
NASA/Jet Propulsion Laboratory. "Making a spectacle of star formation in Orion." ScienceDaily. www.sciencedaily.com/releases/2011/06/110630162311.htm (accessed April 20, 2014).

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