universe science

Alternative cosmological models

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Modern cosmology is experiencing a fascinating epoch where the foundations of our understanding of the universe are constantly being questioned. At the heart of the debates are the alternative cosmological models, which propose different and sometimes radical views compared to the standard model based on the Big Bang theory. In 2025, the quest to decipher … Read more

Dating techniques in the universe

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Les techniques de datation dans l'univers

IN BRIEF Dating methods used to establish the age of objects Carbon 14: the most widespread isotopic method Dendrochronology: dating by tree rings Archaeomagnetism: study of variations in the Earth’s magnetic field Optically Stimulated Luminescence Dating: measuring photons emitted by minerals Potassium-Argon: technique for dating ancient rocks Relative dating vs. absolute dating Use of paramagnetic … Read more