M78 is a nebula in Orion. It is a reflection nebula, that is we see it because it is reflecting light from some nearby stars. As the gas and dust of the nebula preferentially reflect blue light the nebula appear bluish.
M78 is a nebula in Orion. It is a reflection nebula, that is we see it because it is reflecting light from some nearby stars. As the gas and dust of the nebula preferentially reflect blue light the nebula appear bluish.