The hot star system known as MWC 922 appears to be imbedded in a nebula creating the shape of a square. The above image combines infrared exposures from the Hale Telescope on Mount. Palomar in California, and the Keck-2 Telescope on Mauna Kea in Hawaii. The theory is that the central star or stars expelled cones of gas during a late developmental stage.
Astronomers speculate that the cones viewed from another angle would appear similar to the gigantic rings of supernova 1987A, the brightest supernova of modern times, possibly indicating that a star in MWC 922 might one day explode in a similar supernova. Over time, astronomers have watched and waited for the expanding debris from this tremendous stellar explosion to crash into previously expelled material.