The quest to find a theory of quantum gravity that could potentially explain everything.
Nearly 60 years ago, Nobel Prize-winners Arno Penzias and Robert Wilson stumbled across a mysterious hiss of faint radio static that was interfering with their observations. They had found the key to unravelling the story of the Big Bang and the origin of our universe.
That signal was the Cosmic Microwave Background (CMB), the earliest light in the universe, released 379, 000 years after the Big Bang. It contains secrets about what happened during the very first tiny increments of time, which had consequences that have rippled throughout cosmic history, leading to the universe of stars and galaxies that we live in today.
This is the enthralling story of the quest to understand the CMB radiation and what it can tell us of the origins of time and space, from bubble universes to a cyclical cosmos – and possibly leading to the elusive theory of quantum gravity itself.
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Keith Cooper is a freelance science journalist and editor, and author of The Contact Paradox: Challenging Assumptions in Our Search for Extraterrestrial Intelligence (Bloomsbury Sigma). He is the Editor of Astronomy Now, and has edited the website Astrobiology Magazine.
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