Wired Space Photo of the Day: Iris Nebula

This cloud of glowing gas is the Iris nebula, as seen in infrared light by NASA's Spitzer Space Telescope. The main cluster of stars within the nebula is called NGC 7023. It lies 1,300 light-years away in the Cepheus constellation. Between 2003 and 2005, thanks to its unprecedented sensitivity, NASAs Spitzer Space Telescope created maps of regions like this, showing the location of complex organic molecules called polycyclic aromatic hydrocarbons (PAHs). PAHs may be precursors to the organic ingredients that kick started life on Earth.

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