Astronomers have made an intriguing discovery that could upend everything we know about the structure of the universe and its expansion. Scientists recently found that dark energy, the mysterious form of energy that drives the accelerating expansion of the universe, could be weakening over time. The findings could undermine the existing, standard cosmological model of the universe called the lambda-cold dark matter (LCDM) model, which is made up of dark energy, ordinary matter, and cold dark matter, a hypothetical form of dark matter that moves slowly compared to the speed of light. The symbol lambda in the model refers to […]

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