The Universe is hotter than expected

The Andromeda galaxy, our nearest neighbour at 2.5 million lightyears away. This galaxy along with ours and hundreds others make up the Virgo supercluster which is about 100 million lightyears in length. DR - Researchers at the University of Geneva have succeeded in reconciling cosmological theory and observations of the Universe by considering that it is hotter than previously thought. Astrophysicists still encounter various inconsistencies between cosmological theory and measurements made with various research instruments. Four values are particularly problematic: the speed of the expansion of the Universe today, the magnitude of matter density variations within the Universe, and the temperature variations and trajectory of the primordial light of the Universe. By no longer fixing the temperature of this light and the curvature of the Universe in their calculations, researchers at the University of Geneva , Switzerland, have succeeded in reconciling theory with the data. The reason? We live in an under-dense region in the Universe which slightly distorts the calculations and leads to these inconsistencies.