Nuking an incoming asteroid will spew out X-rays. This new model shows what happens 

 After a NASA mission redirected an asteroid moonlet with a planned crash in 2022, a new model is building on that effort to show how a nuclear weapon could smash a space rock to pieces. 

https://cdn.mos.cms.futurecdn.net/A9aEEgCYGv7nHYgLfJX2KL.jpg

https://www.space.com/asteroid-nuclear-defense-model-x-rays-study