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According to Sciencedaily, NASA’s PExT terminal has achieved a major milestone in space communications, demonstrating that spacecraft can transmit data across diverse relay systems. This capability moves beyond traditional single-network setups, paving the way for a more robust and flexible global space infrastructure.
Testing Multi Network Space Communications
The Polylingual Experimental Terminal (PExT) launched on July 23, 2025, aboard York Space Systems' BARD spacecraft. The mission utilized widely adopted Ka-band spectrum to enable data movement across multiple satellite systems simultaneously. During the primary testing phase completed in December 2025, the terminal successfully transmitted data to Earth using several distinct networks.
- NASA’s Tracking and Relay Satellite system (government network).
- Commercial networks operated by Viasat.
- Commercial networks provided by SES Space and Defense.
This initial success validated PExT's core objective: proving the feasibility of multi-network communication, which is critical for mission resilience in complex orbital environments.
Expanding Capabilities with Direct Links and Software
The extended operations phase, beginning in January 2026, focuses on two key areas. First, NASA is testing direct communications links between the spacecraft and Earth via SSC Space's worldwide ground station network. This effort aims to complete more than 50 direct connections through SSC Space’s partner facility in Weilheim, Germany.
This flexibility allows future missions to either route data through relay satellites when necessary or communicate directly with ground stations, thereby improving coverage and operational efficiency. Second, NASA is collaborating with Aalyria Technologies to demonstrate enterprise service operations using the company's Spacetime software platform. This system provides a coordinated framework for planning and delivering communications services across multiple missions.
The initiative aligns with the Hybrid Space Architecture program, led by the U.S. Department of War. The goal is to create an interoperable ecosystem where government and commercial satellite systems can function together seamlessly. By leveraging Spacetime, NASA aims to simplify operations and enhance visibility into available services throughout a mission's lifetime. This comprehensive approach underscores the growing reliance on private sector expertise to support national space objectives.
The PExT project is funded by NASA’s Space Communications and Navigation (SCaN) Program in partnership with the Johns Hopkins Applied Physics Laboratory, solidifying its role as a cornerstone for next-generation space operations.