NASA successfully nudged Dimorphos into a different orbit, but was off by a factor of 3 in predicting the change in period, apparently due to the debris ejected. Will we also need to know the composition and structure of a threatening asteroid, to reliably deflect it away from an Earth strike? Submitted by ECatPlay t3_y2o5k2 on October 13, 2022 at 3:28 AM in askscience No comments 2