The problem is simple to state and notoriously difficult to solve: what happens when a spacecraft loses its GPS signal? For satellites in low Earth orbit, the answer is often a drift into uselessness. For anything operating beyond that, like a lunar lander, the question is existential. Rhea Space Activity (RSA) is building its entire business on the answer, packaging a suite of astrophysics-based technologies into hardware and software designed to keep vehicles oriented and on course when terrestrial navigation fails.
Founded in 2018 by astrophysicist and former intelligence official Dr. Shawn M. Usman, the Washington, D.C.-based startup operates at the intersection of deep science and national security. Its core product is the Jervis Autonomy Module (JAM), a plug-and-play subcomponent that provides onboard, GPS-independent navigation for spacecraft [Rhea Space Activity]. The company's recent $6 million Series A round, led by SpaceFund, Boston Global, and Iron Prairie Ventures, is aimed at deploying this technology to U.S. and allied military customers [Rhea Space Activity, April 2026]. But the most concrete validation of the approach isn't a venture check; it's a flight manifest. In 2026, two JAM units are scheduled to launch on a Draper-led lunar lander mission, funded by a $750,000 NASA TechFlights grant [SpaceNews, 2026].
A portfolio built on government R&D
RSA's path to market is a classic deep-tech playbook, relying heavily on non-dilutive government research funding to de-risk its technology before commercial or defense sales. The company has systematically pursued contracts through U.S. Department of Defense channels like AFWERX and the Small Business Innovation Research (SBIR) program. This strategy has yielded a series of awards that fund specific capability development.
- Autonomous navigation. Beyond the NASA grant for JAM, the company was awarded a definitive contract worth up to $1.8 million by the Air Force Research Laboratory in April 2025 for undisclosed work [HigherGov, 2026].
- Quantum communications. RSA developed QLOAK, a prototype system designed to bolt onto existing laser communication terminals to enable quantum-secure links. It was demonstrated in Norway for U.S. and Norwegian special operations commands in 2024 [Defense One, 2024].
- Space domain awareness. Under the banner ROMULUS & REMUS, RSA is proposing an AI-controlled surveillance system using high-altitude balloons and uncrewed vessels, a project noted in partnership with established defense contractor Sierra Nevada Corporation [SBIR.gov].
This contract-driven development has allowed the small team, estimated at 11-50 employees, to advance multiple technology threads in parallel without the immediate pressure of product-market fit in a commercial sense [Perplexity Sonar Pro Brief].
The technical wedge: celestial navigation, rebooted
JAM represents the company's most mature technical bet. The module's value proposition hinges on moving navigation from a ground-based, signal-dependent process to an onboard, autonomous one. Traditional spacecraft often rely on signals from the Global Positioning System or ground station updates, creating a vulnerability and a latency issue, especially for missions beyond Earth's immediate vicinity.
JAM uses optical software to recognize stars and other celestial landmarks, calculating position and orientation independently. This method, known as optical navigation, is not new in principle,planetary missions have used it for decades. RSA's claimed innovation is in packaging the capability into a standardized, low-size, weight, and power (SWaP) module that can be integrated into a wider variety of spacecraft, including smaller satellites, without custom engineering.
The upcoming lunar mission is the critical test. Success would demonstrate JAM's functionality in a real cislunar environment, providing a powerful case study for defense customers concerned about operating in GPS-denied or contested spaces.
The founder's asymmetric advantage
Dr. Shawn Usman's background is central to understanding RSA's focus and early traction. As a former intelligence official with over a decade in federal service developing "high-risk/high-reward technologies," he brings a dual fluency in advanced astrophysics and the specific procurement language and problem sets of the national security community [Perplexity Sonar Pro Brief]. His role as a Senior Advisor to SpaceFund also provides a bridge to investment circles familiar with the long timelines of space technology.
The leadership team includes Cameo Lance as Chief Operating Officer, interacting with government customers, and Samuel Lee as Chief Financial Officer [Perplexity Sonar Pro Brief]. The table below outlines the core team structure.
| Role | Name | Background Note |
|---|---|---|
| Founder & CEO | Dr. Shawn M. Usman | Astrophysicist, former intelligence official, Senior Advisor to SpaceFund. |
| Chief Operating Officer | Cameo Lance | Director of Physics programs, interfaces with government customers. |
| Chief Financial Officer | Samuel Lee | Financial operations. |
Navigating a high-stakes, slow-moving market
The primary risk for RSA is not technological novelty but commercial scale. The company's entire model is predicated on the U.S. government's continued willingness to fund R&D and subsequently purchase operational systems. This creates a dependency on procurement cycles that are often slow, politicized, and subject to shifting budget priorities. While early SBIR and AFWERX contracts are excellent for proof-of-concept, transitioning to larger production contracts or direct sales to allied nations is a different motion, one that has tripped up many defense-tech startups.
Furthermore, the competitive landscape includes entrenched aerospace and defense primes like Sierra Nevada Corporation,listed as a competitor but also a proposed partner on the ROMULUS & REMUS project. These giants have existing relationships, massive resources, and the ability to bundle navigation solutions with entire spacecraft platforms. RSA's bet is that its focus on a specific, critical niche (autonomous, GPS-denied navigation) and its agile, module-based approach will allow it to out-innovate and integrate faster than larger rivals.
The next phase: from experiment to deployment
The next twelve months are pivotal. The lunar lander mission in 2026 is the single most important milestone on the company's public roadmap. A successful demonstration of JAM would provide irreplaceable flight heritage, a currency of immense value in the aerospace and defense sectors. It would directly support the case for the company's $1.8 million Air Force Research Laboratory contract and help secure follow-on orders.
The $6 million Series A provides runway to staff up and mature its other technologies, like the QLOAK quantum communicator, toward similar demonstration points. The investor group, which includes space-focused VC SpaceFund, suggests backers are betting on the team's ability to navigate the complex bridge from government R&D to scalable product deployment.
From an engineering standpoint, the scalability challenge for RSA's approach is twofold. First, the robustness of celestial navigation algorithms must be proven across diverse orbital regimes and under dynamic threat conditions, like sensor blinding. Second, the business model must scale beyond bespoke government contracts. The module-based strategy is a good start, but unit economics at low production volumes are tough. The sober assessment is that the technology, while sound in theory, faces its hardest test not in space, but in the mundane grind of manufacturing repeatability, cost reduction, and integration support at scale. If RSA can clear that hurdle, it will have carved out a defensible and essential niche in the new space infrastructure stack.
Sources
- [Defense One, 2024] Rhea Space Activity demonstrates quantum communications prototype | https://www.defenseone.com/technology/2024/07/rhea-space-activity-demonstrates-quantum-communications-prototype/395785/
- [HigherGov, 2026] Contract FA945125CX014 award details | https://highergov.com/contract/FA945125CX014
- [Perplexity Sonar Pro Brief] Company overview and team details |
- [Rhea Space Activity] Company website and product descriptions | https://www.rheaspaceactivity.com/
- [Rhea Space Activity, April 2026] Series A funding announcement | https://www.rheaspaceactivity.com/post/rhea-space-activity-raises-~-6m-series-a-to-deploy-gps-resilient-deep-space-optical-navigation-softw
- [SBIR.gov] ROMULUS & REMUS project listing | https://www.sbir.gov/
- [SpaceNews, 2026] Rhea Space Activity raises $6 million, details NASA lunar mission | https://spacenews.com/rhea-space-activity-raises-6-million-to-develop-gps-free-spacecraft-navigation/