In this special episode of The Big Questions we chat with Dava Sobel, the Janis Joplin of science writing and author of 'Longitude' and 'Galileo's Daughter' and most recently, 'The Glass Universe'. In the 19th-century Harvard College Observatory began employing women as 'human computers' to interpret the observations their male counterparts made via telescope each night. These women changed the history of astronomy, making extraordinary discoveries that attracted worldwide acclaim - what stars are made of, how to categorise them and discovering a way to measure distances across space by starlight. Connect with Adam Spencer at: https://twitter.com/adambspencer Find PodcastOne Australia on Facebook: https://www.facebook.com/podcastoneau/ Follow PodcastOne Australia on Instagram: https://www.instagram.com/podcastoneau/ Follow PodcastOne Australia on Twitter: https://twitter.com/podcastoneau