This talk from Ed Lu[1] has a lot of great illustrations and cost&#x2F;benefit analysis of NEO defense measures. He is obviously a bit biased as CEO of the Sentinel Mission, but IIRC, he isn&#x27;t shy to admit that.<p>[1] <a href="https:&#x2F;&#x2F;www.astrosociety.org&#x2F;silicon-valley-astronomy-lectures&#x2F;the-sentinel-mission-finding-the-asteroid-headed-for-earth&#x2F;" rel="nofollow">https:&#x2F;&#x2F;www.astrosociety.org&#x2F;silicon-valley-astronomy-lectur...</a>