Preview Spiral Galaxy M81, NGC 3031, Optical Image ID: 1349-103 Artist: NASA/Detlef Hartmann Purchase a commercial license Buy framed prints & more from our print store 2014 21st century amateur astronomer astronomy bodes galaxy bodes galaxy celestial body deep sky deep space detlef hartmann galactic nucleus galaxy global astronomy month m81 messier 81 ngc 3031 optical image science spiral galaxy star formation