NGC 2359 Thor's Helmet Nebula

Thor's Helmet Nebula is an emission nebula located in the constellation Canis Major roughly 12 light-years away from Earth. The nebula spans about 30 light-years across.

The bright star at the center of the blue bubble like region is categorized as a Wolf-Rayet star (WR7) and is estimated to be in a brief supernova stage.

Constellation Canis Major

Distance about 12,000 light-years from Earth

Size 10′ across in our sky