The cosmic microwave background can help scientists piece together the history of the universe. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

The Cosmic Microwave Background carries with it a record of events throughout the 13.8-billion-year history of the universe. When you purchase through links on our site, we may earn an affiliate ...

Nearly 400,000 years after the Big Bang, the primordial plasma of the infant universe cooled enough for the first atoms to coalesce, making space for the embedded radiation to soar free. That ...

The Cosmic Microwave Background (CMB for short), is light: the oldest and most distant light that we can see in the entire universe. It comes from soon after the Big Bang – which is considered to be ...

Cosmologists are using secondary signatures from the cosmic microwave background to map the universe’s hidden matter. Nearly 400,000 years after the Big Bang, the primordial plasma of the infant ...

A glow undetectable to the human eye permeates the universe. This light is the remnant signature of the cosmic beginning — a dense, hot fireball that burst forth and created all mass, energy, and time ...