Dr. Tim Gregory works full-time as a nuclear chemist in the heart of the British nuclear industry. In 2017, Tim surpassed thousands of applicants for a place in the six-part BBC2 series Astronauts: Do You Have What It Takes?, where he was put through the full rigours of astronaut selection and reached the final three. Since then, he has gone on to present a segment about meteorites on BBC4's The Sky at Night and has made live television appearances on BBC Breakfast, BBC Look North, and BBC Points West.