These two studies, if read together, show a contrast between the very different meanings of two phrases that sound similar: (1) dust bunnies and (2) bunny dust.
“Planetary formation is an efficient process now thought to take place on a relatively short astronomical time scale. Recent observations have shown that the dust surrounding a protostar emits more efficiently at longer wavelengths as the protoplanetary disk evolves, suggesting that the dust particles are coagulating into fluffy aggregates, ‘much as dust bunnies form under a bed.’ One poorly understood problem in this coagulation process is the manner in which micron-sized, charged grains form the fractal aggregate structures now thought to be the precursors of protoplanetary disk evolution. This study examines the characteristics of such fractal aggregates formed by the collision of spherical monomers and aggregates where the charge is distributed over the aggregate structure.”
“Particulate Matter Concentrations and Emissions in Rabbit Farms,” Elisa Adell, Salvador Calvet, Antonio G. Torres, María Cambra-López [pictured here], World Rabbit Science, vol. 20, no. 1, 2012, pp. 1-11. The authors report:
“Emission results indicate that rabbit farms can be considered relevant point sources of PM [particulae matter] emissions, comparable to other livestock species. Our results improve the knowledge on factors affecting concentration and emissions of PM in rabbit farms.”
(Thanks to investigator Tom Gill for bringing these to our attention.)