OTTAWA, Sept. 29, 2025 (GLOBE NEWSWIRE) -- Telesat (Nasdaq and TSX: TSAT), one of the world’s largest and most innovative satellite operators, and Calian Group Ltd. (TSX: CGY), a trusted provider of mission-critical solutions for defence, space, healthcare and other critical infrastructure sectors, today announced an engagement to develop the operational data platform for the Telesat Lightspeed Low Earth Orbit (LEO) network. Calian will design, develop, integrate, and deploy the Telesat Lightspeed Operation ...