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Ryugu, Bennu, and Itokawa A size comparison of asteroids Ryugu, Bennu, and Itokawa NASA/Goddard/University of Arizona/JAXA/University of Toykyo/ Kochi University/Rikkyo University/ Nagoya University/Chiba Institute of Technology/Meiji University/ University of Aizu/AIST/Edited by Loren Roberts for The Planetary Society