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Fig. 2

image

Left panel: map of sources active in December 2015, projected on the 3D shape model of 67P. Right: close-up view of an RGB color composite showing one of the sources with a typical bluer hue, corresponding to the location of the white box in the left panel. The color image reflects the variegation of the terrain in August 2014, when this area was not yet active. Distance from the comet center: 43 km; resolution: 0.75 m/px. The large block in the center is about 100 m wide. Reference image: NAC_2014-09-05T06.35.55.557Z_ID30_1397549300_F22.

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