20836
Author: Priyamvada Natarajan
File Type: epub
This book provides a tour of the greatest hits of cosmological discoveriesthe ideas that reshaped our universe over the past century. The cosmos, once understood as a stagnant place, filled with the ordinary, is now a universe that is expanding at an accelerating pace, propelled by dark energy and structured by dark matter. Priyamvada Natarajan, our guide to these ideas, is someone at the forefront of the researchan astrophysicist who literally creates maps of invisible matter in the universe. She not only explains for a wide audience the science behind these essential ideas but also provides an understanding of how radical scientific theories gain acceptance. The formation and growth of black holes, dark matter halos, the accelerating expansion of the universe, the echo of the big bang, the discovery of exoplanets, and the possibility of other universesthese are some of the puzzling cosmological topics of the early twenty-first century. Natarajan discusses why the acceptance of new ideas about the universe and our place in it has never been linear and always contested even within the scientific community. And she affirms that, shifting and incomplete as science always must be, it offers the best path we have toward making sense of our wondrous, mysterious universe.**ReviewExtremely well researched. . . . According to Natarajan, the word universe may be on the verge of its most radical redefinition yet.Marcus Chown, Times Higher EducationI am studying the big picture as thrillingly projected in Mapping the Heavens, a strikingly lucid account of the expansion, not just of the universe, but of the way we have tried to understand it, from the Babylonians to black holes and dark matter.Richard Holmes, By the Book, New York Times Book ReviewBy introducing the major players behind each discovery, Natarajan adds a lively human touch to her discussion, reinforcing the dynamism of a field that fans human curiosity and is driven by it as well.Publishers Weekly(starred review)Both novel and absorbing. . . . Her phrase Mapping the Heavens is both literal and metaphorical. Natarajan describes the revolutions that have taken place in our ability to explore the structure of our universe. But the point she makes is deeper. By describing developments in cosmologyincluding the discovery of other galaxies, the discovery of the expansion of the universe, the existence of dark matter, black holes, and the mysterious dark energy causing the observed expansion of the universe to be speeding upshe succeeds in demonstrating how the progress of fundamental science often challenges the mental maps that scientists conceive to represent their ideas.Lawrence M. Krauss, New York Review of BooksMapping the Heavens gives a highly readable, insiders view of recent discoveries in astronomy with unusual attention to the instruments used and the human drama of the scientists.Alan Lightman, author of The Accidental Universe and Einsteins DreamThis excellent book describes the boisterous debates and hard slogwhereby our current understanding of the cosmos has emerged. Itsespecially welcome as a faithful portrayal of how science is actually done.Martin Rees, author of Just Six NumbersPriyamvada Natarajans love affair with the heavens began in childhood, continues with her notable work in astrophysics, and is now enhanced with this insightful overview of the hottest topics in astronomy todayincluding black holes, dark matter, dark energy, and exoplanets. Moreover, she traces how these ideas struggled to get accepted, providing the reader with an excellent peek at how science gets done.Marcia Bartusiak, author of Black Hole and The Day We Found the UniversePart history, part science, all illuminating. If you want to understand the greatest ideas that shaped our current cosmic cartography, read this book.Adam G. Riess, Nobel Laureate in Physics, 2011In this delightful tour of the cosmos, Priyamvada Natarajan traces the intellectual journey that has led to todays understanding of the universe. Deftly weaving centuries of scientific progress with the curiosity, skepticism, and fortitude that made such progress possible, Natarajan captures well humanitys passionate drive to discover.Brian Greene, author of The Hidden Reality and The Elegant UniverseFrom the AuthorHow do you map the universe? Explorers once understood Earth by mapping what they saw. If I only included visible objects in my map of the universe, it would show a mere four percent of the cosmos. Equipped with Einsteins theory of general relativity, I use gravity to see how invisible dark matter bends light from stars and galaxies. This provides a remarkably detailed picture of the structure of the universe. Is dark matter real? Scientists know a lot about how dark matter is distributed in the universe and the critical role it plays in the formation of galaxies. Dark matter is mysterious because it lacks much personalityit interacts very weakly with ordinary matter (like you), it moves sluggishly, and it accumulates in lumps. You are right to be skepticalthe history of science is replete with abandoned invisible explanations (ether, miasma, and phlogiston)but there is much evidence that dark matter is real. Could a figure like Einstein exist today? No and yes. Many fields are so specialized that it is hard to imagine one person making an Einsteinian impact. That said, the Internet makes it much easier for an outsider to garner the attention of the scientific establishment. Of course she would still need transformative, innovative, and radical ideas. Where will we find the next radical scientific ideas? We now have copious data in cosmology, neuroscience, genetics, and material science. Finding and comprehending meaningful patterns in that data will allow us to mine for fundamental principles and new frontiers for exploration. This is how I think we are going to find the next radical idea that could upend everything!
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