Lion Nebula

I lesser know nebula. Located midway between Cassiopeia and North America Nebula.  

Also known as Sharpless 132, this nebula is home to Wolf-Rayet star WR153ab. These massive stars are nearing their transition to supernova or black hole.

In the OIII wavelength (the blue in this image) there appears to be a river of gasses running through the nebula. However, this river is actually part of a ring nebula being pushed by the WR star