Life in Our Universe (The Great Courses)

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Are we alone in the universe? Or does the cosmos pulse with diverse life forms? This is one of the most profound issues facing mankind—and one of the unresolved questions that science may finally be able to answer in this century. Both scenarios are mind-boggling and, to quote futurist Isaac Asimov, equally frightening. No matter […]

History of Science: Antiquity to 1700 (The Great Courses)

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“All human beings, by nature, desire to know.” —Aristotle, The Metaphysics. For well over 2,000 years, much of our fundamental “desire to know” has focused on the area we now call science. In fact, our commitment to science and technology has been so profound that these now stand as probably the most powerful of all […]

The Life and Death of Stars (The Great Courses)

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For thousands of years, stars have been the prime example of something unattainable and unknowable—places so far away that we can learn almost nothing about them. Yet amazingly, astronomers have been able to discover exactly what stars are made of, how they are born, how they shine, how they die, and how they play a […]

Science in the 20th Century: A Social-Intellectual Survey (The Great Courses)

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As the 19th century drew to a close, the age-old quest to understand the physical world appeared to be complete except for a few minor details. “It seems probable that most of the grand underlying principles have been firmly established,” said Albert Michelson, the first American scientist to win a Nobel Prize. But when Michelson […]

Physics of History (The Great Courses)

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In April 1991, two Alpine hikers stumbled across the well-preserved body of a Copper Age hunter half-buried in a glacier on the border between Italy and Austria. This accidental discovery, nicknamed Ötzi the Iceman, possessed a trove of invaluable information about the origins of prehistoric people. Yet while standard archaeological techniques revealed many interesting aspects […]

New Frontiers: Modern Perspectives on Our Solar System (The Great Courses)

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In recent years, cutting-edge telescopes, satellite imaging, and unmanned spacecraft have led to a fascinating series of discoveries that have changed our picture of the Sun and the family of objects that orbit it—including Earth. This new perspective has grown out of many intriguing findings such as these: The reclassification of Pluto as a dwarf […]

Cosmology: The History and Nature of Our Universe (The Great Courses)

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Evidence for the birth of the universe is raining down on you. It’s called the cosmic microwave background, and it’s had quite a journey. Born in the stupendous annihilation of matter and antimatter seconds after the big bang, trapped in the hot plasma of the expanding universe for 380,000 years, and then suddenly released when […]

The Origin and Evolution of Earth: From the Big Bang to the Future of Human Existence (The Great Courses)

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The story of Earth is an epic filled with crises, catastrophes, and remarkable, repeated change. Earth traces its origin to simple atoms that were created in the big bang, transformed into heavy elements in stellar explosions, and then forged into a planet inside the nebula that gave birth to the solar system. Like many other […]

Joy of Science (The Great Courses)

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English novelist and scientist C. P. Snow classed certain scientific ideas with the works of Shakespeare as something every educated person should know. One such idea, according to Snow, was the second law of thermodynamics, which deals with the diffusion of heat and has many profound consequences. He might well have added Newton’s laws, the […]

How the Earth Works (The Great Courses)

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Continents move. Glacial cycles come and go. Mountains spring up and erode away. We live on a planet that is constantly in motion-except we see it in extreme slow motion. In this exciting course of 48 half-hour lectures, you effectively speed up the action to witness the history of our planet unfold in spectacular detail, […]