There's a great book called 'Mitigation of Hazardous Comets and Asteroids' which is worth a read if you can find it. Totally overpriced at $192 on Amazon, I som

There's a great book called 'Mitigation of Hazardous Comets and Asteroids' which is worth a read if you can find it. Totally overpriced at $192 on Amazon, I somehow got it at a quarter of that price.