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Planetary and Space Science 74 (2012) 179 -193 Contents lists available at SciVerse ScienceDirect Planetary and Space Science journa l h o m e p ag e: www. e lsevier .com/locate/pss The present-day flux of large meteoroids on the lunar surface--A synthesis of models and observational techniques J. Oberst a,b,n, A. Christou c, R. Suggs d, D. Moser e, I.J. Daubar f, A.S. McEwen f, M. Burchell g, ? ... Impact craters and their n Corresponding author at: DLR Institute of Planetary Research, Rutherfordstr. ...