What could cause a nebula look square?
No one is quite sure. The hot star system known as MWC 922, however, seems to be embedded in a nebula with just that way.
The image shown combines infrared exposures from the Hale Telescope on Mount Palomar, California (USA), and the Keck-2 Telescope on Mauna Kea, Hawaii (USA).
The main hypothesis of the origin of a square nebula is that the central star or stars somehow expelled cones of gas during a late stage of development. With respect to the MWC 922, is that these cones are practically straight angles and look sideways.
Among the evidence supporting the hypothesis of the cones are included in the image rays, which would go along the walls of the cones Researchers speculate that cones viewed from another angle could be similar to giant rings of supernova 1987A, possibly indicating that a star in MWC 922 might explode someday turn into a supernova similar.Texto Apod
One of the difficulties they deal with the bodies of the cosmos is to avoid the circumference and / or the field, where apparently it seems able to find in the world of straight geometry characteristic of human architecture.
No doubt the conical point to the "fringes" of comets.
Figure integrates with multiple cones, there appears to be another center emerging at right angles, which can not be such, less extension are giving it a rectangular shape that we see our own as red squares and the most famous is that of Moscow.
Another possibility concerned the following:
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