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Example of stellar shells and tidal streams in the halo of nearby galaxies from ground-based images. ARRAKIHS will allow imaging 10 times deeper. (Image credit: Martinez, Delgado et al.)
Example of stellar shells and tidal streams in the halo of nearby galaxies from ground-based images. ARRAKIHS will allow imaging 10 times deeper. (Image credit: Martinez, Delgado et al.)