Earth/Moon impact rate comparison: Searching constraints for lunar secondary/primary cratering proportion

Published data for global impact rate of bolides are compared with the cratering rate on the Moon in the past 100 Ma (assumed to be constant). The comparison shows, that in the limits of used models accuracy, the current meteoroid flux in the Earth-Moon system is approximately the same as in the last 100 Ma. provided most of the small (D < 200 m) craters counted on the young (<= 100 Ma) lunar surface are primary. not secondary craters. (c) 2006 Elsevier Inc. All rights reserved.