This image posted on September 23, 2013 shows the emission nebula just south of the star Antares - located in the constellation of Scorpio. Small stars near the nebula radiate heat which tears the electrons away from the atoms. The electrons eventually recombine with the atom to form light and give the nebula its glow. The nebula itself is said to be located approximately 6000 light-years away and 250 light-years across which would take up the same area as four full moons on the sky.
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