This talk from Ed Lu[1] has a lot of great illustrations and cost/benefit analysis of NEO defense measures. He is obviously a bit biased as CEO of the Sentinel

This talk from Ed Lu[1] has a lot of great illustrations and cost/benefit analysis of NEO defense measures. He is obviously a bit biased as CEO of the Sentinel Mission, but IIRC, he isn't shy to admit that. [1] https://www.astrosociety.org/silicon-valley-astronomy-lectures/the-sentinel-mission-finding-the-asteroid-headed-for-earth/ https://www.astrosociety.org/silicon-valley-astronomy-lectur...