After a year of tests, a hyperspectral spy satellite is being called into service this weekend as a military reconnaissance tool, the Air Force says.
The Tactical Satellite-3, or TacSat-3, uses hyperspectral imaging to identify objects of interest in the ground and supply coordinates for them. Within 10 minutes of passing overhead, laptop-sized ground terminals can mark points of interest for combat troops, as the Register reports.
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.