SpaceLink

Updated 18 Jul 2026
Manufacturer United States Listed
5 Products
5 Services
7 Years Active
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About SpaceLink

SpaceLink Corporation is building a high-capacity relay satellite constellation in Medium Earth Orbit (MEO) that ensures at least one relay satellite is always visible to any Low Earth Orbit spacecraft or habitat. Their Always in Sight service eliminates data downlink delays — reducing wait times from 45–90 minutes to near real-time — for satellite operators in commercial Earth observation, defense and intelligence, civil space, and human spaceflight sectors.

SpaceLink holds exclusive licensing for more than 21 GHz of radio frequency spectrum for relay services, making them the commercial successor to NASA's TDRSS data relay system. Their architecture is designed to scale to 10 Terabits per second of orbiting optical capacity, with intersatellite links routing data directly to customer-specified ground terminals anywhere on Earth.

Headquartered in McLean, Virginia with a Silicon Valley office in Mountain View, California, SpaceLink is a wholly owned subsidiary of Electro Optic Systems Holdings Limited (EOS), a public company traded on the Australian stock exchange. SpaceLink has received NASA contracts and DARPA Space-BACN selection for optical ground relay studies.

Milestones

  • 2019 Founded as subsidiary of Electro Optic Systems (EOS)
  • 2021 NASA awards relay communications study contract
  • 2022 DARPA selects SpaceLink for Space-BACN optical communications program
  • 2022 Signs Cooperative R&D Agreement with U.S. Army

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Products

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SpaceLink provides continuous, high-capacity broadband communication services for human spaceflight, connecting spacecraft, habitats, and depots in LEO to Earth.

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SpaceLink offers a data relay service utilizing Medium Earth Orbit (MEO) satellites to provide real-time, high-speed data transfer for Low Earth Orbit (LEO) satellites, eliminating the need for dedicated ground networks.

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EOS SpaceLink provides secure, low-latency data connectivity services for defense and intelligence applications using a dedicated network of MEO spacecraft and ground stations.

SpaceLink is a high-bandwidth, continuous communications relay service for spacecraft in various orbits, addressing the limitations of direct-to-Earth station communication.

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SpaceLink offers a commercial data relay service for civil space missions, providing high-capacity, fast data transfer capabilities.

Additional Services

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Licensing & regulatory
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Regulatory support for spectrum utilization and licensing

SpaceLink provides regulatory support to its customers, specifically addressing challenges related to spectrum utilization and satellite licensing. The company actively works with regulators to maximize spectrum efficiency, thereby alleviating the burden on customers who would otherwise need to navigate the…

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Comms capacity
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SpaceLink is actively constructing a foundational communications infrastructure designed to bolster the burgeoning space economy. This infrastructure is intended to provide secure and continuous monitoring and control capabilities for various space-related activities. The service facilitates real-time insights and informed decision-making…

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SpaceLink offers a high-capacity data relay service, leveraging its Always in Sight™ optical intersatellite links to facilitate rapid and secure transfer of large volumes of data from Low Earth Orbit (LEO) spacecraft to users globally. This service aims to maximize…

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Engineering & analysis
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Network modeling, resource optimization, and scheduling management software

SpaceLink has developed proprietary software tools for network modeling, resource optimization, and scheduling management. This software is designed to optimize the capacity and throughput of its relay satellite constellation by efficiently managing the establishment of links with client spacecraft. This…

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Other services
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Development of protocols for commercial-DoD space interaction

SpaceLink has been selected by DARPA to participate in the Space-Based Adaptive Communications Node (Space-BACN) program. In this capacity, SpaceLink will contribute to studying and developing protocols that govern the interaction between commercial communications constellations and Department of Defense (DoD)…

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