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Fulle, M. Hofmann, M. Kueppers, M. Lazzarin, N. Oklay, N. Thomas, O. Groussin, P. J. Gutierrez, P. L. Lamy, R. Rodrigo, S. Boudreault, S. Debei, S. F. Hviid, S. Fornasier, S. Hoefner, V. Da Deppo, W.-H. Ip, X. Shi","submitted_at":"2016-08-29T07:19:01Z","abstract_excerpt":"We present OSIRIS/NAC observations of decimetre-sized, likely ice-containing aggregates ejected from a confined region on the surface of comet 67P/Churyumov-Gerasimenko. The images were obtained in January 2016 when the comet was at 2 AU from the Sun out-bound from perihelion. We measure the acceleration of individual aggregates through a two-hour image series. Approximately 50% of the aggregates are accelerated away from the nucleus, and 50% towards it, and likewise towards either horizontal direction. 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