Abstract
Near supernova 1987a, the rare honeycomb structure of 20–30 galactic bubbles measures 30 × 90 light years. Its remarkable regularity in bubble size suggests a single-event orgin which may correlate with the nearby supernova. To test the honeycomb's regularity in shape and size, the formalism of statistical crystallography is developed here for bubble sidedness. The standard size-shape relations (Lewis's law, Desch's law, and Aboav-Weaire's law) govern area, perimeter and nearest neighbor shapes. Taken together, they predict a highly non-equilibrium structure for the galactic honeycomb which evolves as a bimodal shape distribution without dominant bubble perimeter energy.
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