Mark Zuckerberg speaks to astronauts in real-time on Facebook Live –video

Facebook's CEO, Mark Zuckerberg, speaks to astronauts onboard the International Space Station on Wednesday night via Facebook Live. Zuckerberg quizzes the ISS crew, including British astronaut Tim Peake, on what they do for fun and how to become a successful cosmonaut

• Watch the full interview on Nasa's Facebook page