Esa說，它希望擴大對擁有進入太空的 "合適的東西 "的定義。
Esa said it wanted to widen the definition of what it means to have "the right stuff" to go into space.
This announcement does not mean McFall is guaranteed to go into orbit. Instead, he will be part of a feasibility programme to see what the requirements would be for that to be possible.
"We're making a first step by opening up this call to people that have certain types of physical disability, and we really hope we'll be flying them on a mission to the International Space Station," he told BBC News.
Esa will be working with Nasa on the feasibility study. They need to establish first that a para-astronaut's inclusion wouldn't compromise crew safety. It's also possible the space vehicles in which they travel will need adaptations.
They were chosen from more than 20,000 applicants. On the diversity theme, the number of women wanting to join the corps was up significantly on the last recruitment in 2009, and this has fed through to the final selection.
"I am just over-happy that finally we have some some new colleagues," she said. "It's going to be a much more diverse group, and I'm certainly looking forward to not being any more the only woman astronaut in the European astronaut corps. That's important because the current composition of our corps does not reflect where we are in society."
The announcement of the new astronauts was made here in Paris at the Grand Palais Éphémère, where Esa member states have been meeting to set the programmes and budget of the agency over the next three to five years.