Cosmologists are preparing to cast their sharpest-ever eyes on the early Universe. From an altitude of 5,300 metres on Cerro Toco, in northern Chile’s Atacama Desert, the Simons Observatory will map ...

The universe is expanding, but astronomers still cannot agree on exactly how fast. That mismatch, known as the Hubble tension, has turned a seemingly simple number into one of the biggest headaches in ...

A new study, published on Arxiv, has deepened the cosmic puzzle surrounding the “Hubble tension,” an ongoing debate about the universe’s expansion rate. The findings come from the Atacama Cosmology ...