BBCNEWS BBC News November 24, 2021 14:52:00
Around a larger space rock. the spacecraft, travelling at 13,000 miles an hour, will fly into the small asteroid, leaving an impact crater up to 20 metres wide. but this should also give the rock a kick, which will speed up its orbit and this can be monitored from the earth to see if it has worked. all you really need is a nudge. because the distances you are going and the speeds you are going, a tiny change in direction can result in a huge change in how far it is going to miss the earth. and that could be vital. a 160 metres wide rock like dimorphos could be catastrophic for populated areas....