As part of the Principia Mission Space Diary project - supporting Tim Peake's mission to the International Space Station - Britain's first astronaut, Helen Sharman, talks about communication in space. Not only do astronauts have to learn other languages for their training and communication in space, but they also have to understand how and when to communicate with earth. This video accompanies Chapter Two of the Principia Mission Space Diary. Sign up at principiaspacediary.org/sign-up to get exclusive access to the book, to download and complete at home or in the classroom. We also supply a Classroom Kit for teachers and educators with lots of resources, tips and information around the theme of a spacecraft launch. Principia Mission Space Diary: http://principiaspacediary.org Tim Peake's Principia Mission: http://principia.org.uk Watch Tim Peake's launch live from the ESA: http://www.esa.int/Our_Activities/Human_Spaceflight/Principia/Principia_live This project is produced by Curved House Kids and supported by the UK Space Agency, the European Space Agency, Queen Mary University of London and the London Science Museum. The space diary crew are author Lucy Hawking, Publisher Kristen Harrison at The Curved House, Professor Peter McOwan at Queen Mary University of London and illustrator Ben Hawkes. Intro/Outro animated by Timothy Armstrong Music by Nina Hynes Edited and produced by The Curved House (www.thecurvedhouse.com)