Passionate K-Pop fans send us on a journey into the science of fandom. Panellists Andrada Fiskutean in Bucharest, Romania and Tristan Ahtone in Helsinki, Finland bring us stories of Star Trek’s sci-fi utopias, why allegiances affect our behaviour and how a cunning sea creature chooses which side of itself to reveal.

Presenter Marnie Chesterton meets one of her heroes - American theoretical cosmologist and particle physicist Dr Chanda Prescod-Weinstein, who helps Marnie understand the universe with lyrical beauty.