NASA has been looking at space blasting with nuclear weapon rockets as well as gravity diversion of objects coming in collision with the earth but the truth is that they are still theoretical and has not been proven that if there is a shoot, it will hit the object. So this mean that NASA isn’t ready currently for any hit in the nearest future.

Really scary but very important information you have sharing. But the main thing is NASA know how to handle this type of situation and specific group working on this subject daily and doing a research. So may be they are prepared.