Gómez De Castro, Ana InésWamsteker, WillemBarstow, MartinBrosch, NoahKappelmann, NorbertKollatschny, WolframDe Martino, DomitillaPagano, IsabellaDes Etangs, Alain LecavelierEhenreich, DavidReimers, DieterGonzález Delgado, RosaNajarro, FranciscoLinsky, Jeff2023-06-202023-06-202006-06Gómez De Castro, A. I., Wamsteker, W., Barstow, M. et al. «Fundamental Problems in Astrophysics». Astrophysics and Space Science, vol. 303, n.o 1-4, junio de 2006, pp. 133-45. DOI.org (Crossref), https://doi.org/10.1007/s10509-006-9057-4.0004-640X10.1007/s10509-006-9057-4https://hdl.handle.net/20.500.14352/50063Progress of modern astrophysics requires the access to the electromagnetic spectrum in the broadest energy range. The Ultraviolet is a fundamental energy domain since it is one of the most powerful tool to study plasmas at temperatures in the 3,000-300,000 K range as well as electronic transitions of the most abundant molecules in the Universe. Moreover, the UV radiation field is a powerful astrochemical and photoionizing agent. The objective of this review is to describe the crucial issues that require access to the UV range. A summary has been added to the end with a more classic view of UV needs by astronomical object type; this approach is followed at length in the rest of the contributions of this issue.engjournal articlehttps//doi.org/10.1007/s10509-006-9057-4http://www.springerlink.com/content/mn2pw27471771n68/fulltext.pdfrestricted access52Active galactic nucleiIntergalactic mediumEscaping atmosphereFuseGasDiskAbsorptionRedshiftHydrogenCarbonUV astronomyAstronomía (Matemáticas)21 Astronomía y Astrofísica