A new cost study estimates that space-based missile interceptor constellations could run from tens of billions to several trillion dollars, underscoring technical warnings from former Pentagon technology chief Mike Griffin, who has argued that physics and budgets will ultimately determine whether boost, glide or midcourse designs are feasible. The analysis , conducted by American Enterprise Institute defense budget specialist Todd Harrison, maps the cost of orbital constellations across basic, moderate and robust scenarios for each mission type. Griffin, speaking at...