A billion seconds – or 31 and a half years – seems long to us. In the 13.7 billion year history of the universe, it’s not even an eyeblink. But the first billion seconds, those were very special indeed, giving us the foundations of the universe we see today. Astrophysicist Dr. Katie Mack joins us to discuss beginnings, endings – and what we hope to discover about the dark parts of our universe over the next billion seconds.
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