Rose and Elliott look at what makes stars different from each other and how to classify them, as well as the work of the “Harvard computers” that made stellar classification possible. They look at stellar spectroscopy and black-body radiation, the colour of stars and find out just why it took so long to make the Harvard system of classifying stars. After all, how hard can it be?Find us at throughthetelescope.co.ukLinks relating to this episode:Annie Jump Cannon and stellar classification: https://princetonastronomy.com/2021/02/01/annie-jump-cannon-and-the-creation-of-stellar-classification/Music:"Nowhere Land" Kevin MacLeod (incompetech.com)Licensed under Creative Commons: By Attribution 4.0 Licensehttp://creativecommons.org/licenses/by/4.0/ Get bonus content on Patreon Hosted on Acast. See acast.com/privacy for more information.