Stephenson 2-18

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Stephenson 2-18 is a red supergiant star located in the constellation Scutum, close to the open cluster Stephenson 2, located 19,000 light-years away from Earth. It is possibly the largest known star, with a radius of 2,150 solar radii. If it were placed at the center of the Solar System, its photosphere would encircle Saturn's orbit.

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