Graham at Swinburne University of Technology says “LEDA 074886 dwarf galaxy formed from the merger of two disc galaxies, like a couple of pancakes stacked on top of each other.” “It appears rectangular from the side.” “Clearly this is a rare type of event but not entirely new.” So far a total of eight rectangular galaxies have been cataloged in a survey of millions of galaxies.
red square nebula MWC 922
The “emerald diamond cut” dwarf galaxy LEDA 074886 has both a rectangular geometric outline and an inner disk of star formation.
Our milky way galaxy has a distinct SQUARE appearance like the Pinwheel galaxy M101. The logical conclusion is that geometric shaped galaxies are common in the universe, and must be a rare alignment, to see the entire geometric galactic shape from the location of observation. Most galaxies are believed to have about 3 spiral arms, and these are straight arms when viewed along a line of sight.
Graham writes in “Leda 074886: A remarkable rectangular-looking galaxy” about other rectangular galaxies 1) “the spiral galaxy SDSS J 074018.17+282756.3 has a rather squarish-looking spiral-armed interior.” 2) “a squarish expanding shell of young blue stars in local dwarf Sextans A irregular galaxy.” 3) “blue compact dwarf galaxyVCC 1699 rectangular galaxy.” 4) “rectangular bow-tie shaped galaxy NGC 4488.” 5) “the closest match is the relative luminous rectangular galaxy IC 3370.”