Space Force Awards SpaceX $2.29 Billion for LEO Network Prototype by 2027
Updated
Updated · Breaking Defense · May 26
Space Force Awards SpaceX $2.29 Billion for LEO Network Prototype by 2027
4 articles · Updated · Breaking Defense · May 26
A $2.29 billion Other Transaction Authority award tasks SpaceX with delivering a fully operational low-Earth-orbit data transport prototype for the Space Data Network by the end of 2027.
The constellation—built on SpaceX's Starshield system—will serve as the SDN Backbone, a high-capacity, low-latency backhaul layer designed to keep military sensors and shooters connected worldwide.
The contract size stands out: the Space Force's fiscal 2026 budget included $277 million for the effort, while its FY27 request seeks $1.5 billion in R&D and $1.6 billion in procurement through reconciliation.
The backbone, formerly called MILNET, fits into a broader multi-orbit mesh that also includes the Space Development Agency's Transport Layer and is intended to support future Pentagon missions including Golden Dome missile defense.
How will this militarized satellite network challenge international space laws and arms control?
Does military reliance on a commercial network create a powerful shield or a single point of failure?
Is the 'Golden Dome' shield a feasible defense or a multi-trillion-dollar gamble in space?
Revolutionizing Military Communications: Inside the $2.29 Billion Space Data Network Backbone and Its Strategic Impact
Overview
The U.S. Space Force is launching the Space Data Network (SDN) Backbone, a major step to revolutionize military communications. With SpaceX awarded a $2.29 billion contract, the SDN Backbone will create a robust, resilient, high-capacity, and low-latency data transport system. This system is designed as a proliferated low Earth orbit mesh constellation with essential ground infrastructure, forming a sophisticated military internet in space. The SDN Backbone aims to support global military operations by providing a strong foundation for a wide range of mission needs, marking a new era in defense connectivity and operational capability.