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UK researchers have launched a miniature microgravity biology experiment to the International Space Station (ISS), using microscopic worms to study how living organisms respond to deep-space conditions. The project could contribute to understanding the health risks associated with long-duration missions, including future lunar exploration.

For eeNews Europe readers, the work highlights how compact, instrumented payloads are enabling life sciences research in orbit, with potential implications for spacecraft design, astronaut health monitoring, and low-cost experimental platforms.

Miniaturised lab studies microgravity and radiation effects

The experiment, led by the University of Exeter and engineered at Space Park Leicester, focuses on C. elegans nematode worms, a widely used biological model. Launched aboard a cargo mission from NASA’s Kennedy Space Center, the system will operate both inside and outside the ISS, exposing samples to microgravity, vacuum and radiation for up to 15 weeks.

Dr Tim Etheridge from the University of Exeter added: “NASA’s Artemis programme marks a new era of human exploration, with astronauts set to live and work on the Moon for extended periods for the first time. To do that safely, we need to understand how the body responds to the extreme conditions of deep space. By studying how these worms survive and adapt in space, we can begin to identify the biological mechanisms that will ultimately help protect astronauts during long-duration missions — and bring us one step closer to humans living on the Moon.”

Compact ‘petri pod’ platform enables remote experimentation

At the core of the mission is the Fluorescent Deep Space Petri-Pods (FDSPP) system, a self-contained unit measuring roughly 10 × 10 × 30 cm and weighing around 3 kg. It integrates 12 sealed chambers, each maintaining controlled temperature, pressure and air supply, effectively acting as miniature life-support environments.

Four chambers include imaging capabilities using fluorescent and white light optics, allowing researchers to track biological changes remotely via still images and time-lapse video. The system also collects environmental data such as radiation dose, pressure and temperature, which is transmitted back to Earth.

Professor Mark Sims, project manager at the University of Leicester, said: “FDSPP is Leicester’s first major microgravity life sciences project, and it has been both an interesting and challenging instrument to design and build. The project builds upon previous work with Tim Etheridge and the University of Exeter.”

The approach reflects a broader shift towards smaller, lower-cost experimental platforms in space research, potentially enabling more frequent biological studies without the need for large, complex payloads.

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