Fly! aims to make space missions accessible for all. For the first time, ESA is exploring whether an astronaut with a physical disability could embark on a long duration mission to the International Space Station. At the heart of the Fly! Project is John McFall, a former Paralympic athlete and orthopaedic surgeon who became a leg amputee after a motorcycle accident. The programme demonstrates ESA’s commitment to increasing diversity and expanding its pool of astronaut talent.

John McFall – the expert on Fly!

John McFall was selected in 2022, becoming the first person with physical disability to be a member of ESA's astronaut reserve. ESA launched the Feasibility Study phase of Fly! focusing on John's disability: lower limb amputation. John's expertise helps develop innovative solutions for people with physical disabilities facing space-related challenges, such as microgravity adaptation, fitness and technology integration.


Project launch: November 2022

Expert: John McFall, UK

Domains: medical, training, crew support, spacecraft, and ISS operations


1 st astronaut with disability
2 phases completed
6 key domains
8 key team members

Latest news

Prostheses fit to Fly!

The performance of a lower limb prosthesis has been evaluated in microgravity conditions for the first time during the latest ESA parabolic flight campaign on the ‘Zero G’ aircraft.

Running on treadmill during parabolic flight



Testing prosthesis fit in simulated microgravity
John McFall cycling in a head-down position to explore whether fluid shifts altered the fit or comfort of John’s prosthesis during exercise.

Related links

Visualising Fly!
Visualising Fly!