In this episode, a conversation with Samantha Harvey, author of Orbital. This is life on our planet as you’ve never seen it before: in this spellbinding and uplifting novel six astronauts rotate in the International Space Station. They are there to do vital work, but slowly they begin to wonder: what is life without earth? What is earth without humanity?

Together they watch their silent blue planet, circling it sixteen times, spinning past continents, and cycling through seasons, taking in glaciers and deserts, the peaks of mountains and the swells of oceans. The fragility of human life fills their conversations, their fears, their dreams. So far from earth, they have never felt more part - or protective - of it.

Samantha Harvey’s previous books include The Wilderness, All is Song, Dear Thief and The Western Wind and a work of non-fiction, The Shapeless Unease: A Year of Not Sleeping. Her work has been longlisted for the Booker Prize, and shortlisted for the James Tait Black Award, the Women's Prize, and the Guardian First Book Award.