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 ...

One of the Holy Grails in cosmology is a look back at the earliest epochs of cosmic history. Unfortunately, the universe's first few hundred thousand years are shrouded in an impenetrable fog.

The data on the cosmic microwave background collected with the Atacama Cosmology Telescope (ACT) shows the state of the cosmos approximately 380,000 years after the Big Bang. Assuming that the ...