Horizon Europe – EU Space Research Call 2025 open for submission

With a total budget of €139 million, the Horizon Europe EU space research call 2025 offers a variety of exciting collaboration opportunities for the space community.

As part of Horizon Europe Cluster 4: Digital, Industry and Space – Destination 5, the call HORIZON-CL4-2025-02 (SPACE-HADEA) covers 20 topics under the following thematic headings:

Heading 1 – Accessing Space

• HORIZON-CL4-2025-02-SPACE-11: CSA on access to European spaceports

• HORIZON-CL4-2025-02-SPACE-12: Digital solutions for autonomy for space transportation systems, design and simulation tools - Digital enablers and building blocks

• HORIZON-CL4-2025-02-SPACE-13: Digital solutions for autonomy for space transportation systems, design and simulation tools – targeting demonstration

Heading 2 – Acting in Space

•  HORIZON-CL4-2025-02-SPACE-21: ISOS Pilot Mission Detailed Design – Servicing component

• HORIZON-CL4-2025-02-SPACE-22: ISOS Pilot Mission Detailed Design – HOST

•  HORIZON-CL4-2025-02-SPACE-23: ISOS Pilot Mission Detailed Design – Logistics component

•  HORIZON-CL4-2025-02-SPACE-24: ISOS Pilot Mission Detailed Design – satAPPs component

Heading 3bis – Using Space on Earth – Telecommunications and Earth Observation

•  HORIZON-CL4-2025-02-SPACE-31: Digital enablers and building blocks for Earth Observation and Satellite telecommunication for Space solutions

• HORIZON-CL4-2025-02-SPACE-32: Preparing demonstration missions for collaborative Earth Observation and Satellite telecommunication for Space solutions

Heading 4 – Using Space on Earth – Earth Observation

• HORIZON-CL4-2025-02-SPACE-41: Copernicus Climate Change Service (C3S) evolution: new and innovative processing and methods for future Sentinels and other satellites for reanalyses

• HORIZON-CL4-2025-02-SPACE-42: Copernicus Atmosphere Monitoring Service (CAMS) evolution: improved soil-vegetation-atmosphere modelling and data assimilation of atmospheric constituents

•  HORIZON-CL4-2025-02-SPACE-43: Copernicus Anthropogenic CO₂ Emissions Monitoring & Verification Support (CO2MVS) capacity: new and innovative methods to estimate the impact of fires on vegetation and related carbon fluxes

•  HORIZON-CL4-2025-02-SPACE-44: Copernicus Marine Environment Monitoring Service (CMEMS) evolution: new and innovative ocean data assimilation techniques

•  HORIZON-CL4-2025-02-SPACE-45: Supporting the AI/ML digital transition of Copernicus Services

•  HORIZON-CL4-2025-02-SPACE-46: Innovative Earth observation services in support of maritime litter detection and ship source pollution policies

Heading 8 – Boosting Space through non-dependence of the EU for key critical space technologies

• HORIZON-CL4-2025-02-SPACE-71: Space Critical EEE Components for EU non-dependence – RISC-V Microprocessor on 7nm

• HORIZON-CL4-2025-02-SPACE-72: Space Critical Equipment and Related Technologies for EU non-dependence – Chip Scale Atomic Clocks and Solar Cells

• HORIZON-CL4-2025-02-SPACE-73: Space Critical EEE Components for EU non-dependence - Connectors

• HORIZON-CL4-2025-02-SPACE-74: Space Critical EEE Components for EU non-dependence – Advanced Packages and Memories

Heading 9 – Boosting Space through international cooperation

•  HORIZON-CL4-2025-02-SPACE-81: EU-Japan cooperation on the exploitation of Quantum Space Gravimetry data

The deadline for all topics in this call, which is being managed by HaDEA, is 25 September 2025, 17:00 (CEST).

At the Horizon Europe Info Days on Cluster 4 - Digital, Industry and Space, a dedicated session shed light on the call and topic details. The recording is available here.

Read more about the call and topics in this EU Space Observer deep-dive article. 

For more information on the call and topics, please consult the Horizon Europe Work Programme 2025 – Cluster 4 and the call page on the Funding & Tender Opportunities Portal.

Background

EU Space Research aims to foster a cost-effective, competitive, and innovative space industry and research community. Under Horizon Europe Cluster 4 – Space (Destination 5), HaDEA is funding projects that prepare future evolutions of the EU Space Programme components, foster the EU space sector’s competitiveness, reinforce its independent capacity to access space, and secure its autonomy of supply for critical technologies.