Former astronaut Chris Hadfield will be releasing his novel Final Orbit, set against the backdrop of the 1970s Space Race. As NASA prepares for its second year-long Mars simulation mission, Hadfield will explore what it will take for NASA to get humans to Mars by 2030, how astronauts are preparing, and what we can expect from the next phase of space exploration. Chris Hadfield joins Just Asking to answer all your space questions!