Two new studies have measured the expansion of the universe in our immediate cosmic neighborhood using a novel method that analyzes the motion of two nearby galaxy groups within their surrounding ...

DESI (Dark Energy Spectroscopic Instrument) has, in just five years, completed the largest and most comprehensive 3D map of ...

The idea that gravity shapes the universe into nicely bounded superclusters is being overturned by a finding so gargantuan that it could send cosmologists back to the drawing board. The new mapping of ...

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 ...