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Since the discovery of cosmic microwave background radiation in 1965, the Big Bang theory has been the dominant model of our Universe’s origin. In the ensuing decades, an obvious and yet still deeply unsettled question has emerged at the core of cosmology: what happened before it? While many scientists hold firm that there’s no decent evidence to support the notion that anything existed before the Big Bang, new hypotheses have cracked open the door for the possibility.
The UK mathematical physicist Roger Penrose, a professor emeritus at Oxford University and co-recipient of the 2020 Nobel Prize in Physics, is a convert to the camp of thinkers entertaining the notion of a pre-Big Bang state. In this interview with Robert Lawrence Kuhn for the PBS series Closer to Truth, Penrose details a somewhat mind-boggling idea he’s advanced known as the ‘conformal cyclic cosmology’ hypothesis, which proposes that our Universe is just one in an infinite series.
For more on the prospect of a before, before the Big Bang, watch Aeon Video’s interview with Tim Maudlin, a professor of philosophy at New York University.
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Evolution
How – and how not – to think about the role randomness plays in evolution
60 minutes
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Meaning and the good life
A Japanese religious community makes an unlikely home in the mountains of Colorado
9 minutes
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Physics
The rhythms of a star system inspire a pianist’s transfixing performance
5 minutes
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Bioethics
Is it ethical to have a second child so that your first might live?
10 minutes
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Art
Watch as Japan’s surplus trees are transformed into forest-tinted crayons
4 minutes
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Meaning and the good life
‘Everydayness is the enemy’ – excerpts from the existentialist novel ‘The Moviegoer’
2 minutes
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Biology
A spectacular, close-up look at the starfish with a ‘hands-on’ approach to parenting
5 minutes
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Technology and the self
A filmmaker finds a tactile beauty in the creation of her prosthetic leg
11 minutes
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Knowledge
An Indigenous myth and a geological survey elicit two ways of knowing one place
4 minutes