Dobado González, AntonioLópez Maroto, Antonio2023-06-202023-06-202009-040004-640X10.1007/s10509-008-9759-xhttps://hdl.handle.net/20.500.14352/43813© Springer. Conference on Network for Ultra Violet Astronomy (2007. Madrid, España). This work has been partially supported by the DGICYT (Spain) under the project numbers FPA 2004-02602 and FPA 2005-02327 and by the Universidad Complutense/CAM: project number 910309. A.D. thanks Ana I. Gómez de Castro for her kind invitation to participate in the NUVA ConferenceIn this work we review briefly the origin and history of the cosmological constant and its recent reincarnation in the form of the dark energy component of the universe. We also comment on the fundamental problems associated to its existence and magnitude which require an urgent solution for the sake of the internal consistency of theoretical physics.engjournal articlehttp://link.springer.com/article/10.1007%2Fs10509-008-9759-x?LI=truehttp://link.springer.comhttp://arxiv.org/abs/0802.1873open access53Dark EnergyCosmological ConstantFísica (Física)22 Física