Oldest surviving light reveals the universe's true age
When you buy through links on our site , we may earn an affiliate commission . Here ’s how it works . Ancient light from the Big Bang has revealed a precise new estimate for the universe of discourse ’s age : 13.77 billion years , give or take 40 million years . The new estimate , base on data from an array of telescopes in the Chilean Atacama Desert , also weighs in on one of the most important disagreements in astrophysics : How tight is the universe expanding ?...