Sue Nelson and Richard Hollingham are joined by member of the first crew to fix a satellite in orbit, Terry Hart. He discusses this month's Challenger 40th anniversary, and the spy satellite NASA used to check for Shuttle damage. The team also talk space emergencies with the UK Space Agency's senior exploration manager Meganne Christian, and space journalists Ken Kremer and Andrew Cook look ahead to 2026 in space. Like this podcast? Please help us by supporting the Naked Scientists