Abela, RafaelBeaud, Paulvan Bokhoven, Jeroen A.Chergui, MajedFeurer, ThomasHaase, JohannesIngold, GerhardJohnson, Steven L.Knopp, GregorLemke, HenrikMilne, Chris J.Pedrini, BillRadi, PeterSchertler, GebhardStandfuss, JörgStaub, UrsPatthey, Luc2019-11-052019-11-052019-11-052018-01-0810.1063/1.4997222https://infoscience.epfl.ch/handle/20.500.14299/162693We present the main specifications of the newly constructed Swiss Free Electron Laser, SwissFEL, and explore its potential impact on ultrafast science. In light of recent achievements at current X-ray free electron lasers, we discuss the potential territory for new scientific breakthroughs offered by SwissFEL in Chemistry, Biology, and Materials Science, as well as nonlinear X-ray science.text::journal::journal article::review article