OICC Press Journal of Theoretical and Applied Physics 2251-7235 20 1 2026 02 28 The Cosmological Constant as an Intrinsic Mass of Spacetime 10.57647/jtap.2026.2001.09 EN Ennadifi Salah Eddine Mohammed V University of Rabat Faculty of Science Rabat Rabat 10500 Morocco Journal Article 2026 02 28 Supported by the dynamical role of spacetime in General Relativity, I suggest an argument of the materialization of spacetime at high scales M P . Such a materialization is given in terms of massive spacetime structures m Λ , whose energy density corresponds to the observed small cosmological constant Λ 1/4 Obs 10 3 eV, a candidate for Dark Energy in the universe. Under the known data, such an intrinsic spacetime mass is probed as m Λ & 10 52 eV.