COLORADO SPRINGS, Colo. — A Canadian company is targeting commercial and government markets with a proposed constellation of 40 low Earth orbiting satellites designed to keep tabs on the environment both in space and on the ground.

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Warren Ferster is the Editor-in-Chief of SpaceNews and is responsible for all the news and editorial coverage in the weekly newspaper, the spacenews.com Web site and variety of specialty publications such as show dailies. He manages a staff of seven reporters...