Introduction

Do you ever look up to the stars and wonder about what is out there?

Over the last few centuries, humans have successfully unraveled much of the language of the universe, exploring and defining formerly mysterious phenomena such as electricity, magnetism, and matter through the beauty of mathematics. But some secrets remain beyond our realm of understanding—and seemingly beyond the very laws and theories we have relied on to make sense of the universe we inhabit. It is clear that the quantum, the world of atoms and electrons, is entwined with the cosmos, a universe of trillions of stars and galaxies...but exactly how these two extremes of human understanding interact remains a mystery. Where Did the Universe Come From? And Other Cosmic Questions allows readers to eavesdrop on a conversation between award-winning physicists Chris Ferrie and Geraint F. Lewis as they examine the universe through the two unifying and yet often contradictory lenses of classical physics and quantum mechanics, tackling questions such as:

• Where did the universe come from?
• Why do dying stars rip themselves apart
• Do black holes last forever?
• What is left for humans to discover?

Geraint Lewis is a Welsh astrophysicist, who is best known for his work on dark energy, gravitational lensing and galactic cannibalism. Lewis is a Professor of Astrophysics (Teaching and Research) at the Sydney Institute for Astronomy, part of the University of Sydney's School of Physics. He is head of the Gravitational Astrophysics Group. He was previously the Associate Head for Research at the School of Physics, and held an Australian Research Council Future Fellowship between 2011 and 2015. Lewis won the 2016 Walter Boas Medal in recognition of excellence in research in Physics. I

In April 2020, Geraint was elected as a Fellow of the Learned Society of Wales. He is also an elected fellow of the Royal Society of New South Wales.

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