RCW 120 is located about 5,500 light-years from Earth. The glowing sapphire nebula — an expanding bubble of mostly hydrogen gas & soot — has been sculpted by the energetic light and ferocious winds from a giant star. This ever-so-elegant blob is roughly 13 light-years across.
X-ray (Chandra): NASA, CXC, Penn State/K. Getman, et al.;
Infrared (Spitzer): NASA, JPL
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