The majority of content associated with EPSRC and other UKRI councils is licensed under CC BY SA 4.0 and can be reused with proper attribution and an equitable license. Please refer to the EPSRC / UKRI website for further guidance and information on how to request permissions for other use. EPSRC is the successor of SERC UK, the Science and Engineering Research Council (UK), which was responsible for some aspects of International Ultraviolet Explorer (IUE) planning and operations.