equivalent of an 11 megatons nuclear explosion. to put that into context for viewers, explosion. to put that into context forviewers, if explosion. to put that into context for viewers, if that was to hit london out you would get severe damage as far out as the m25 with buildings collapsing as far as the south circular, down the road from my house. that would be pretty serious and that was only something 50 metres wide. we do know these objects pose a hazard and this is an important mission to hopefully save humanity from something bad happening in the future. does it ever crossed happening in the future. does it ever crossed your happening in the future. does it ever crossed your mind - happening in the future. does it ever crossed your mind or- happening in the future. does it i ever crossed your mind or subscribe to the view that maybe humanity deserves to be wiped out and the earth can be reset and start again? not really, it would be pretty catastrophic for humanity to be wipe