Project METRO (Metabolic gases Transfer for Optimised algae growth) is a technology demonstrator developed for the European Space Agency (ESA) and is one of the selected experiments of the Czech Journey to Space initiative.
The mission’s primary objective is to validate the efficiency of a unique hybrid photobioreactor in a microgravity environment. The experiment investigates how the lack of gravity affects fluid dynamics and the mass transfer of metabolic gases (CO₂ and O₂) between microalgae and the nutrient solution. This data is critical for developing efficient Life Support Systems (LSS) that will allow astronauts on future deep-space missions to recycle air and produce fresh food.
The flight hardware is designed as a fully automated mini-laboratory installed within the ICE Cubes Facility (International Commercial Experiment Cubes) inside the European Columbus module on the International Space Station (ISS). This facility provides the experiment with power, real-time data downlink to Earth, and a controlled environment for culture growth.
Technical Specifications:
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Facility: ICE Cubes Facility (ICF), Columbus Module, ISS.
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Form Factor: Standardized Cube Container (2U+ size).
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Dimensions: 100 × 100 × 250 mm.
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Mass: < 2 kg (including cultivation medium).
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Mission Duration: 10+ days of autonomous operation.
· Outcomes ·
STEM Education & Inspiration
METRO serves as a live platform for education. By involving university students directly in a real space mission, we are training the next generation of engineers and scientists. We demonstrate that world-class space projects can be led from the Czech Republic, inspiring young people to pursue careers in science and technology.
Czech Footprint on the ISS
We are showcasing the maturity of the Czech space industry. The project proves that Czech institutions can act as Prime Contractors, capable of developing, building, and qualifying complex flight hardware for ESA. This strengthens the national position within the global space sector.
Sustainability on Earth
Space tech for a green planet. Researching efficient air recycling and algae cultivation in extreme conditions yields data applicable to terrestrial ecology. These insights help develop technologies for air purification, sustainable food production, and biofuel generation with a minimal carbon footprint.
· Our Team ·
Prime Contractor, Technical Implementation Responsible for the overall engineering design and integration of the experimental hardware. The expert team from the Department of Aerospace Engineering (Faculty of Mechanical Engineering) ensures the photobioreactor meets the strict safety and mechanical requirements for operation within the Columbus module. They manage the assembly of the flight model and its qualification for launch.
Scientific Lead, Biology Defines the scientific objectives and measurement methodology. The Algal and Microbial Biotechnology Group designed the photobioreactor configuration specifically for microgravity conditions. They are responsible for preparing the biological cultures and performing the subsequent analysis of data regarding gas transfer and metabolic processes in orbit.
Avionics and Software Provider of control electronics and on-board software. The company develops the system for automated experiment control, telemetry collection, and communication with the ground segment. Their primary task is to ensure reliable system operation in a higher-radiation environment and seamless integration with ISS data interfaces.
Project Management and Administration Oversees project management and coordination between academic and industrial partners. The company ensures the administrative framework, compliance with the schedule, and reporting to the funding provider and the European Space Agency (ESA).