Bill Nye the science guy says 'let's change the world!' #ssp12
Mars Czar Prof Scott Hubbard on the evolution of Mars exploration
Dr Jacques Arnould on the big question "Why?". Ethics in the space arena and why they're important
ISU President Prof Walter Peeters on the cost and commercialisation of space
Learning lessons from the ISS from NASA's Russell Romanella
NASA Ames Centre Director Pete Worden - synthetic biology, AI and future space stations
NASA's Director of Planetary Science talks to me about space, the sun and the future of planetary science, Dr James Green,
Bob Sieck, former NASA Launch Director, on Apollo 13 and launching people to the Moon
Rex Ridenoure: The future of space is exciting
Graham Gibbs explains how the Canadian Space Agency (@csa_asc) manages to punch above it's weight on the global space scene
