A massive stellar wind bubble sculpts the nebula into the shape of the Norse god's famous helmet.
The god of thunder appears to have misplaced his helmet in a new deep-space photo from Ronald Brecher, which captured glorious detail in a nebula scene surrounding a colossal star shining 15,000 light-years from Earth in the constellation Canis Major, the "Great Dog".
Brecher's image reveals the 30-light-year-wide emission nebula NGC 2359, whose bubble-like form was sculpted by the stellar wind blasting out from the colossal Wolf-Rayet star at its heart. The stellar giant is estimated to be 16 times more massive and 280,000 times brighter than the sun, according to the Lowell Observatory.
