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My understanding is that "ISRU" normally stands for "In Situ Resource Utilization", which can include mining asteroids (if your locale is 'asteroid belt'), but
by jholman 9y ago
My understanding is that "ISRU" normally stands for "In Situ Resource Utilization", which can include mining asteroids (if your locale is 'asteroid belt'), but also includes using fuel that can be generated from resources found on a planet or moon.