This massive star bubble is located roughly 5,200 light years away from us here on Earth. A star bubble is the composition of hot gasses blown away by a really hot star. We assume it covers slightly more area the full moon does in our sky which may seem small to us but in actuality, that is roughly 60 light years in diameter. It is located near the constellation Canis Major and is assumed to have come from a "Wolf-Rayet star". Based on its color and size, scientists believe that the bubble is composed mainly of oxygen ions and is roughly 70,000 years old.
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