A rendering of a Telesat Lightspeed satellite based on MDA's new software-defined platform. Credit: Telesat

TAMPA, Fla. — Telesat said Dec. 4 its Lightspeed constellation has passed an early design review, marking a key milestone in the Canadian geostationary operator’s bid to challenge Starlink’s growing broadband dominance in low Earth orbit (LEO).

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Jason Rainbow writes about satellite telecom, finance and commercial markets for SpaceNews. He has spent more than a decade covering the global space industry as a business journalist. Previously, he was Group Editor-in-Chief for Finance Information Group,...