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A study including three researchers at the Hamburger Sternwarte (F. Vazza, M. Brüggen and J. Liske) have discovered a strong connection between the properties of the cosmic gas filling the largest filaments of the cosmic web and the galaxy population they host. In a recent paper by Claudio Gheller from the CSCS Computing Centre of Lugano (Switzerland), soon to be published by MNRAS (http://arxiv.org/abs/1607.01406), the largest cosmological simulations of magnetic fields and the very deep optical and infrared survey GAMA have been combined to study the statistical relation between the real galaxies and of their simulated counterparts. The study found that the average number of galaxies per cosmic filament of a given length is...