Rhea Space
Rhea Space Activity is a Washington, D.C.-based astrophysics startup developing GPS-denied autonomous navigation and secure communications technologies for U.S. and allied military and space customers, with products including AutoNav, SPARROW, JAM, and VANGUARD.
- Company typePrivate
- Founded2018
- HeadquartersWashington, United States
- Headcount11–50
- GTM typeB2B
- OfferingSoftware
What Rhea Space does
Rhea Space Activity (RSA) is a Washington, D.C.-based astrophysics and space technology startup founded in 2018 that develops GPS-denied autonomous navigation and secure communications technologies for U.S. and allied national security space missions. The company's product portfolio centers on celestial navigation — matching onboard optical imagery against known star/celestial positions to compute location and trajectory without reliance on GPS, GNSS, or NASA's Deep Space Network. Core products include AutoNav (deep space optical navigation software originally developed at NASA Jet Propulsion Laboratory), SPARROW (a digital processing unit + camera module providing 50m accuracy on stationary platforms and 250m on high-speed aerial platforms for air, land, and sea vehicles), the Jervis Autonomy Module (JAM, targeted at cislunar operations), and VANGUARD (autonomous GPS-denied rendezvous and proximity operations under a U.S. Space Force contract). The company also maintains a Secure Communications technology area aimed at lunar and deep space environments.
RSA's revenue mechanics are dominated by non-dilutive government funding: NASA grants ($750,000 for JAM cislunar testing), U.S. Space Force grants and contracts ($250,000 Spitzer rescue study; VANGUARD via SpaceWERX's Sustained Space Maneuver Challenge), and equity capital from a small syndicate of space-focused investors (~$6.27M total disclosed including a $6M Series A in April 2026 from Boston Global Space Tech Investors, Iron Prairie Ventures, Blackbird Capital Group, Purdue Research Foundation, New Mexico Vintage Fund, and SpaceFund). Go-to-market is direct enterprise field sales into government and defense/space customers through SBIR-style grants and direct contracting. Customers and partners include NASA, U.S. Space Force, U.S. Air Force Research Laboratory, Varda Space Industries, ispace Technologies U.S., and Draper Laboratory. The company operates three legal entities (Rhea Space Activity, Inc. in the U.S., plus UK and Australian subsidiaries) and has 11-50 employees.
Rhea Space firmographics
Firmographics- Name
- Rhea Space
- Legal name
- Rhea Space Activity, Inc.
- Website
- https://rheaspaceactivity.com
- Company type
- Private
- Founded year
- 2018
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Rhea Space Activity is a Washington, D.C.-based astrophysics startup developing GPS-denied autonomous navigation and secure communications technologies for U.S. and allied military and space customers, with products including AutoNav, SPARROW, JAM, and VANGUARD.
- Ownership category
- akta.pro rank
Rhea Space industry classification
Industry- Product category
- Autonomous Navigation Systems
- NAICS
- Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing (334511), Guided Missile and Space Vehicle Manufacturing (336414)
- SIC
- Search, Detection, Navagation, Guidance, Aeronautical Sys (3812)
- akta.pro primary industry
- Autonomy Software, AI & Mission Management (UAS/UXV) (IMABAIAH)
- akta.pro secondary industries
- Surveillance & Identification Avionics (ADS-B/Transponders/TCAS) (IMABAFAM), Space-Based Defense Systems (SSA, Missile Warning, Protected SATCOM) (IMABAOAH)
Keywords
Where Rhea Space is headquartered
LocationHeadquarters
- HQ city
- Washington
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
Rhea Space business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Personnel, Technology or R&D, Operations, Supply Chain
Revenue model
- Government Grants: RSA receives funding through government grants including NASA's SBIR-style grants ($750,000 in 2024 for Jervis Autonomy Module testing) and US Space Force contracts ($250,000 for Spitzer rescue mission study).
- Series A Funding: RSA raised $6 million in Series A funding from investors including Boston Global Space Tech Investors, Iron Prairie Ventures, Blackbird Capital Group, Purdue Research Foundation, New Mexico Vintage Fund and SpaceFund to accelerate development of AutoNav.
Go-to-market motion1 record
Distribution channels1 record
Marketing channels3 records
Rhea Space product offering
Product offeringCore offering
RSA develops and sells GPS-denied autonomous navigation technology for spacecraft, aircraft, and ground vehicles. Its core products include AutoNav (visual-based spacecraft navigation using celestial observations), SPARROW (a bolt-on navigation module for air, land, and sea vehicles), and the Jervis Autonomy Module for cislunar operations. The company primarily delivers these capabilities to U.S. and allied military, intelligence, and space agencies through government contracts and grants.
Product overview
Rhea Space Activity (RSA) offers a portfolio of autonomous navigation technologies for GPS-denied environments across multiple domains. The core products include SPARROW for terrestrial air, land, and sea vehicles; AutoNav software for deep space optical navigation; the Jervis Autonomy Module (JAM) for lunar/cislunar operations; and VANGUARD for autonomous rendezvous and proximity operations. The company also develops secure communications technologies. These products share a common foundation in celestial navigation algorithms that process optical imagery to determine position without reliance on GPS or satellite navigation systems.
Differentiator
Problem solved
Functional benefit
Brands
- SPARROW: A navigation module providing GPS-independent positioning for air, land, and sea vehicles using celestial navigation and passive optical systems. Features include 50-meter accuracy on low-speed platforms and 250-meter accuracy on high-speed aerial platforms.
- AutoNav
- Jervis Autonomy Module (JAM)
- VANGUARD
Products and services
- SPARROW SPARROW is a GPS-denied autonomous navigation module for air, land, and sea vehicles, comprised of a digital processing unit and camera. It combines computational algorithms with optics to deliver mission-critical position, navigation, and timing in GPS-denied environments, with demonstrated 50-meter accuracy on low-speed/stationary platforms and 250-meter accuracy on high-speed aerial platforms.
- AutoNav AutoNav is visual-based navigation software that guides spacecraft without GPS using onboard optical sensors to capture images of celestial objects and compare them against known positions to calculate location and trajectory. It enables GPS-independent navigation for deep space, lunar, and hypersonic applications and was validated on the Varda W-6 reentry mission in March 2026.
- Jervis Autonomy Module (JAM) The Jervis Autonomy Module (JAM) is autonomous navigation technology for cislunar space operations. It uses high-resolution imaging and celestial navigation to enable spacecraft to autonomously navigate in deep space and lunar environments, reducing reliance on NASA's Deep Space Network.
- Secure Communications
Quantifiable outcome
- 50-meter accuracy on low-speed/stationary platforms; 250-meter accuracy on high-speed aerial platforms
- +1 more outcomes
Companies that use Rhea Space
Customer profileNamed customers3 records
Segments2 records
Ideal customer profiles2 records
Rhea Space technology and API
TechnologyAPI detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
AI capability5 records
Feature3 records
Rhea Space partnerships and signals
Strategic signalPartnerships
Four partnerships are on record, tiered core and minor.
- Varda Space IndustriescoreRSA tested its AutoNav GPS-denied navigation system on Varda's W-6 reentry mission. The test involved collecting imagery during atmospheric reentry to validate celestial navigation techniques that bypass GPS signals blocked by plasma sheath during hypersonic flight.
- ispace Technologies U.S., Inc.coreRSA collaborated with ispace-U.S. on a lunar mission to test the Jervis Autonomy Module (JAM) for autonomous navigation in cislunar space. The partnership involves integrating RSA's technology into ispace's commercial lunar lander mission.
- Draper LaboratorycoreDraper leads initiatives as part of the lunar mission collaboration where RSA's Jervis Autonomy Module will be tested. Draper provides mission coordination and integration support for the autonomous navigation technology demonstration.
- U.S. Air Force Research LaboratoryminorAFRL provided materials and heat shields for the Varda W-6 mission tests where RSA's navigation technology was validated.
Scale indicators3 records
Recent moves8 records
Expansion highlights6 records
Rhea Space competitors and assessment
Company assessmentDirect peers
- Advanced Navigation: Australian company offering AI-driven inertial and GPS-denied navigation systems for land, air, sea, and space platforms. Directly comparable to RSA's SPARROW and AutoNav product lines and a natural peer given RSA's Australian subsidiary.
- SBG Systems: Manufactures compact inertial and GNSS-denied navigation sensors for air, land, and sea vehicles. Directly comparable to RSA's SPARROW offering for vehicle platforms operating in contested or GPS-denied environments.
- Oxford Technical Solutions (OxTS): Specializes in GPS-denied and inertial navigation systems primarily for automotive testing and autonomy, with growing defense applications. Comparable as a peer providing alternative navigation when GNSS is unreliable.
- VectorNav Technologies: Provider of high-performance inertial navigation systems for defense, aerospace, and autonomous platforms, with emphasis on GNSS-denied operation. Overlaps with SPARROW and AutoNav use cases in GPS-challenged environments.
Emerging players
- Xona Space Systems: Develops a commercial LEO satellite constellation as an alternative PNT service to GPS. Comparable to RSA as a next-generation resilient-PNT play for defense and commercial customers, but pursues a satellite-broadcast architecture rather than celestial-vision navigation.
- TrustPoint Inc. Early-stage company developing a commercial LEO PNT constellation as a GPS alternative. Comparable as an emerging player in the resilient PNT category competing for DoD and commercial positioning budgets.
Broad incumbents
- Hexagon | NovAtel: Established GNSS/PNT manufacturer serving aerospace and defense with high-precision positioning products. A broad incumbent competing for resilient PNT programs and likely bidder on DoD GPS-denied opportunities alongside RSA.
- Honeywell Aerospace: Major aerospace supplier with a long-standing PNT/inertial navigation portfolio across commercial and military platforms. Comparable to RSA as a broad incumbent with overlapping GPS-denied and inertial navigation capabilities across aviation and space.
- L3Harris Technologies: Defense prime with a sizable PNT and space navigation business serving DoD, NASA, and allied customers. Overlaps with RSA in resilient PNT, space-based navigation, and GPS-denied solutions for military users.
- BAE Systems Electronic Systems: Global defense prime with significant PNT and navigation electronics programs for military aircraft, ships, and ground vehicles. Overlaps with RSA in resilient navigation, anti-jam PNT, and space-related defense electronics.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
Rhea Space social profiles
Digital presenceRhea Space financial estimates
Financial estimateRevenue estimate
Valuation estimate
Rhea Space leadership team
Management profileNumber of profiles
Profiles1 record
Rhea Space subsidiaries and ownership
Company hierarchySubsidiaries2 records
Rhea Space funding detail
Funding detailFunding overview
Funding rounds6 records
Investors11 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Rhea Space M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Rhea Space
What does Rhea Space do?
RSA develops and sells GPS-denied autonomous navigation technology for spacecraft, aircraft, and ground vehicles. Its core products include AutoNav (visual-based spacecraft navigation using celestial observations), SPARROW (a bolt-on navigation module for air, land, and sea vehicles), and the Jervis Autonomy Module for cislunar operations. The company primarily delivers these capabilities to U.S. and allied military, intelligence, and space agencies through government contracts and grants.
Is Rhea Space a public or private company?
Rhea Space is a private company. It is classified as venture growth investor backed and is currently operating.
When was Rhea Space founded?
Rhea Space was founded in 2018. It employs 11 to 50 people.
Where is Rhea Space based?
Rhea Space is headquartered in Washington, United States, in the North America region.
How does Rhea Space make money?
Two revenue lines are on record. Government Grants are the primary driver. The others are series A Funding.
Who are Rhea Space's main competitors?
Direct peers on record are Advanced Navigation, SBG Systems, Oxford Technical Solutions (OxTS) and VectorNav Technologies. Emerging players are Xona Space Systems and TrustPoint Inc.. Broad incumbents are Hexagon | NovAtel, Honeywell Aerospace, L3Harris Technologies and BAE Systems Electronic Systems.
Does Rhea Space have an API?
No public API is recorded for Rhea Space.
What industry is Rhea Space in?
Rhea Space's product category is Autonomous Navigation Systems. Its primary akta.pro industry code is IMABAIAH, Autonomy Software, AI & Mission Management (UAS/UXV), with a secondary code of IMABAFAM, Surveillance & Identification Avionics (ADS-B/Transponders/TCAS). Its NAICS code is 334511 and its SIC code is 3812.