Pic shows bow-shaped nebula about 4,000 light-years from Earth

NASA has shared a picture of a bow-shaped nebula captured about 4,000 light-years from Earth. "This star is one of the hottest as well, with a surface temperature of about 200,000 kelvin. The nebula spans more than a light-year wide and is energised by ultraviolet light from the central star," wrote NASA.