NGC 346 is the brightest star-forming region in the Small Magellanic Cloud galaxy about 210,000 light-years away from Earth. The light, stellar wind, and heat given off by massive stars have spread the glowing gas within and around this star cluster, forming the surrounding wispy, cowbell-like structure of the nebula.
Image Credit: NASA
The areas covered by the black bands in the corners are where they hid the evidence of UFO’s.