Detonating a nuke close enough to the surface of a comet or asteroid will cause a lot of it to boil away which produces a lot of thrust. And you could always us

Detonating a nuke close enough to the surface of a comet or asteroid will cause a lot of it to boil away which produces a lot of thrust. And you could always use more than one! https://www.universetoday.com/articles/nuclear-detonations-could-deflect-dangerous-asteroids-away-from-earth https://www.universetoday.com/articles/nuclear-detonations-c... https://www.nature.com/articles/s41567-024-02633-7.epdf https://www.nature.com/articles/s41567-024-02633-7.epdf