NASA's Artemis II mission faces a delay as engineers discovered an issue with helium flow in the rocket's propulsion stage. This fault necessitates rolling the rocket back to the Vehicle Assembly ...

Dark matter might have had a turbulent youth. According to an international team, this invisible substance may have formed at extremely high temperatures, moving almost at the speed of light shortly ...

In 1996 Uros Seljak was a postdoc at Harvard, contemplating ways to extract information from the cosmic microwave background (CMB). The distribution of anisotropies, slight temperature differences, in ...

What happened in the first trillionth of a trillionth of a trillionth of a second after the Big Bang? Super-sensitive microwave detectors, built at the National Institute of Standards and Technology, ...