/sci/ - Science & Math

>>11085263
I'd be cheaper and easier to attach rockets and heat shielding to asteroids and drop those on another planet. When you are outside a gravity well, you have the ultimate high ground. Basically, you have a continual swarm of asteroids sling-shotting around the entire solar system, maintaining top speed, but not so much they exit the solar system and not too much to prevent an easy trajectory change at the right time to hit a target. It'd like like a big multiple race tracks where one section of each comes "close" to the target all the time depending on the time of year. Because of the speeds involved the asteroids don't need to be very large at all.

A 3 meter shielded asteroid hitting a 70km/s would be around 25 kilotons of energy before hitting the atmosphere. Comparatively, Trinity nuclear test was 22 kilotons yield (pic).