Last year, a study sent a quiet tremor through the field of cosmology. A team of researchers claimed that the universe’s expansion might be slowing down, not speeding up, suggesting that dark energy, the mysterious force thought to be driving the cosmos apart, could be weakening. If true, it would have shaken the foundations of our understanding of the universe. Now, a new study including two Nobel laureates has looked carefully at the evidence and reached a clear verdict – crisis averted.
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