One of the best-performing models in cosmology is also one with the least physical rationale behind it. Columnist Leah Crane ...

How did the universe come into being? There are a multitude of theories on this subject. In a Physical Review Letters paper, three scientists formulate a new model: according to this, inflation, the ...

For twenty years, astronomers have been scratching their heads over a big puzzle about how supermassive black holes, some of the brightest objects out there, showed up less than a billion years after ...

Comparison between the constraints from ACT (blue), DESI BAO (grey), and ACT+DESI (red) for the BAO parameters and the spectral index ns. The pink band represents the ns values for the preferred ...