Open Cosmos
UK small satellite mission prime targeting sovereign and regional government customers. Notable contracts include the Greece EUR 60M sovereign EO programme and the NanoMagSat ESA Earth Explorer 10 mission. Expanding into LEO connectivity via the ConnectedCosmos business line. Operates DataCosmos, a multi-source EO data aggregation platform with STAC and COG access plus Python and Jupyter notebooks integration. Runs the OpenConstellation consortium model under which multiple sovereign and commercial customers share a federated satellite fleet.
Open Cosmos is a UK-based satellite prime contractor and EO data platform operator, incorporated in 2015 and headquartered in Didcot, Oxfordshire.[^companies-house] The company designs, builds, launches, and operates satellites ranging from 3U CubeSats to ~100-kilogram microsatellites, serving sovereign government and commercial customers seeking end-to-end mission services.
Its principal service offering is OpenOrbit, which covers assembly, integration and testing, launch campaign management, in-orbit operations, and data delivery for customer missions.[^open-cosmos-about] Alongside this, OpenConstellation provides a shared satellite fleet infrastructure allowing multiple organisations to access Earth observation data through a mutualised model. The DataCosmos platform extends this to multi-source data delivery: it aggregates imagery from Open Cosmos-operated missions, Sentinel, Landsat, SpaceWill, Geosat, and other providers, accessible via STAC API, Cloud Optimised GeoTIFF, Python and Jupyter notebook integration, and an AI application layer covering cloud detection, building mapping, and carbon monitoring.[^datacosmos-page]
Open Cosmos holds two major sovereign contracts that anchor its commercial position. In May 2024, ESA awarded it a EUR 60 million contract on behalf of the Hellenic Government to build a seven-satellite Earth observation constellation featuring very-high-resolution optical, multispectral, and hyperspectral payloads plus IoT and AIS receivers, with launch targeted for the second half of 2026.[^greece-contract] In November 2024, ESA signed a EUR 34.6 million contract for the NanoMagSat Scout mission: three satellites at 545 km altitude carrying absolute magnetometers, high-frequency magnetometers, Langmuir probes, and dual GNSS receivers to monitor Earth's magnetic field, with first launch expected late 2027.[^nanomagsat-esa]
The company closed a $50 million Series B round in September 2023 led by ETF Partners, Trill Impact, and A&G Energy Transition Tech Fund, bringing total external funding to approximately $57 million.[^series-b-pr] The company reports EBITDA-positive status since 2020, though this figure is self-reported and not drawn from audited accounts. As of early 2025, the company employs approximately 145 people across its UK, Spanish, Portuguese, and Greek entities.
In January 2026, Open Cosmos launched the first two satellites of ConnectedCosmos, a LEO connectivity constellation using optical inter-satellite links and Ka-band spectrum to deliver point-to-point broadband and direct-to-device IoT services for European government and commercial customers.[^connectedcosmos]
Existing EO-Atlas missions operated or built by Open Cosmos include MENUT (a 6U CubeSat for Catalonia, launched January 2023), Phisat-2 (an ESA AI Earth observation demonstrator), ALISIO-1, MANTIS, PLATERO, HAMMER, 6GStarLab, and several IoT/connectivity payloads.