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By: Matthew Hedman
256 pages, 58 halftones, 41 line drawings
Matthew Hedman shows how scientists have determined the age of everything from colonization of the New World over 13,000 years to the age of the universe, which is nearly 14 billion years old. Taking advantage of recent advances throughout the sciences, Hedman brings the distant past closer to us than it has ever been. He details, for example, how interdisciplinary studies of the Great Pyramids of Egypt can determine exactly when and how these incredible structures were built. He shows how the remains of humble trees can illuminate how the surface of the sun has changed over the past 10 millennia. And he explores how the origins of the Earth, solar system, and universe are being discerned with help from rocks that fall from the sky, the light from distant stars, and even the static seen on televisiobn sets.
Covering a wide range of time scales, from the big bang to human history, this provocative and far-ranging look at how science has determined the age of everything from modern mammals to the oldest stars will be indispensable for all armchair time travellers.
We are used to being told confidently of an enormous, measurable past: that some collection of dusty bones is tens of thousands of years old, or that astronomical bodies have an age of some billions. But how exactly do scientists come to know these things? That is the subject of this quite fascinating book.... As told by Hedman, an astronomer, each story is a marvel of compressed exegesis that takes into account some of the most modern and intriguing hypotheses. - Steven Poole, Guardian "Hedman is worth reading because he is careful to present both the power and peril of trying to extract precise chronological data. These are all very active areas of study, and as you read Hedman you begin to see how researchers have to be both very careful and incredibly audacious, and how much of our understanding of ourselves - through history, through paleontology, through astronomy - depends on determining the age of everything." - Anthony Doerr, Boston Globe"
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