It is our great pleasure to invite you to submit your contributions for the 72nd International Astronautical Congress, which will take place in Dubai, UAE at from 25 to 29 October 2021 under the theme “Inspire, Innovate & Discover for the Benefit of Humankind”. The Call for Abstracts is a precursor to a subsequent submission of a final paper, which may be presented at the IAC. Authors are invited to submit an abstract regarding an original, unpublished paper that has not been submitted in any other forum. Abstracts must fit into one of the following IAC categories: Science and Exploration, Applications and Operations, Technology, Infrastructure, Space and Society. Submit your abstract at www.iafastro.net no later than 28 February 2021 (11:59 PM EST).