To celebrate 20 years of people living on the International Space Station, we feature only ISS astronauts in this special edition of Space Boffins. NASA Astronaut Nicole Stott joins Richard Hollingham and Sue Nelson and we revisit interviews with Chris Hadfield, Cady Coleman, Scott Kelly, Sergei Krikalev, Luca Parmitano and Michael Foale. What other podcast on the planet gives you seven astronauts in an hour? Like this podcast? Please help us by supporting the Naked Scientists