By Elizabeth Edwards, Costanza Caraffa and Ruth Quinn In conversation: photographic curatorship and photographic cultures in museums and research institutions By Christine Ferguson Power at play in paranormal history By Hannah Redler-Hawes We create the Universe: artists and scientists take on the Big Bang By Tilly Blyth and Alison Boyle Theory and every thing: acquiring the office of Professor Stephen Hawking as a resource for history and museology By Tilly Blyth Issue 21 Editorial By Ken Arnold Book review: Stuff: Humanity’s Epic Journey from Naked Ape to Nonstop Shopper by Chip Colwell, Hurst, 2023 By Harry Parker Book review: The Museum of Other People, by Adam Kuper (London: Profile, 2023) By Rebekah Higgitt, Susana Biro and Pedro M P Raposo Revealing observatory networks through object stories: Observatory audiences By Ileana Chinnici, Louise E Devoy and Fernando B Figueiredo Revealing observatory networks through object stories: Object itineraries By Emily Akkermans, Kelley Wilder and Samantha Thompson Revealing observatory networks through object stories: Instrumental networks