Fig. 1

Examples of clusters of bright spots observed in four different regions of the comet: a) Khepry; b) Imhotep; c) Ash; and d) Anouket. Clusters of bright spots are frequently observed in debris fields in the vicinity of decameter-high cliffs. They are generally found in areas receiving low insulation, as suggested by the amount of shadow in the images. a) Khepry. Subset of OSIRIS NAC image: NAC_2014-09-30T04.43.14.587Z_ID30_1397549100_F22.IMG; b) Imhotep. Subset of OSIRIS NAC image: NAC_2014-09-30T01.23.46.579Z_ID30_1397549100_F22.IMG; c) Ash. Subset of OSIRIS NAC image: NAC_2014-09-19T18.34.00.344Z_ID30_1397549800_ F22.IMG; d) Anouket. Subset of OSIRIS NAC image: NAC_2014-09-16T09.43.48.370Z_ID30_1397549200_F22.IMG.
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