Cosmic microwave background is a sea of radiation that provides us with evidence for the big bang. When around 1916 Einstein first used general relativity to build a cosmic model, he followed the ...

Cosmic microwave background data support cosmology’s standard model but retain a mystery about the universe’s expansion rate.

A never-before-seen image of the cosmic microwave background, combining data from the Atacama Cosmology Telescope (ACT) and the Planck satellite, offers a high-definition view of the early Universe.

Further evidence for the Big Bang comes from the discovery of cosmic microwave background radiation (CMBR). Astronomers discovered cosmic microwave background radiation in the 1960s. The ...