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Chennai: The Indian space agency will simulate various scenarios, including what it has not done and what it had assumed, to arrive the probable cause of its moon lander Vikram hitting the lunar surface after veering away from its plotted path and losing communication link with ground stations, a retired senior ISRO official said.Early on September 7, Vikram, while on its descent to soft land on the Moon's south polar region, apparently lost control and crash-landed there, snapping the communication links. "The Indian Space Research Organisation (ISRO) has to simulate various things and scenarios with the data on hand. It should…