Seen in the infrared, the nebula resembles a giant, glowing red box in the sky, with a bright white inner core. A dying star called MWC 922 is located at the system's center and spewing its innards from opposite poles into space.
'This spectacular event is the death of a star,' said study team member James Lloyd of Cornell University.
After MWC 922 ejects most of its material into space, it will contract into a dense stellar corpse known as a white dwarf, shrouded by clouds of its own remains.
What is particularly astonishing about the Red Square, the researchers say, is the degree of symmetry seen in lines, or 'rungs,' that bisect its surface.
'If you fold things across the principle diagonal axis, you get an almost perfect reflection symmetry,' said study leader Peter Tuthill from the University of Sydney in Australia. 'This makes the Red Square nebula the most symmetrical object of comparable complexity ever imaged.'
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