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Where did we come from? Before there was life there had to be something to live on - a planet, a solar system. During the past 200 years, astronomers and geologists have developed and tested several different theories about the origin of the solar system and the nature of the Earth. The three volumes that together make up A History of Modern Planetary Physics present a survey of these theories. The age of the Earth has been one of the most disputed numbers in science since the seventeenth century. Transmuted Past follows the development of theories of stellar evolution and nucleosynthesis in the twentieth century and describes radiometric methods for estimating the age of the Earth. Professor Brush also offers perspectives on the changing reputation of planetary science relative to the 'pure' sciences, such as physics, and a comparison of history and geology as ways of studying the past.
A new and detailed picture of Mercury is emerging thanks to NASA s MESSENGER mission that spent four years in orbit about the Sun s innermost planet. Comprehensively illustrated by close-up images and other data, the author describes Mercury s landscapes from a geological perspective: from sublimation hollows, to volcanic vents, to lava plains, to giant thrust faults. He considers what its giant core, internal structure and weird composition have to tell us about the formation and evolution of a planet so close to the Sun. This is of special significance in view of the discovery of so many exoplanets in similarly close orbits about their stars. Mercury generates its own magnetic field, like the Earth (but unlike Venus, Mars and the Moon), and the interplay between Mercury s and the Sun s magnetic field affects many processes on its surface and in the rich and diverse exosphere of neutral and charged particles surrounding the planet.
There is much about Mercury that we still don t understand. Accessible to the amateur, but also a handy state-of-the-art digest for students and researchers, the book shows how our knowledge of Mercury developed over the past century of ground-based, fly-by and orbital observations, and looks ahead at the mysteries remaining for future missions to explore."
"This board book edition of the classic bestselling book is perfect for baby and preschoolers. Danny and Dinosaur are back, and this time they are going to space! But when Danny realises he's forgotten Dino's lunch box, the very hungry dinosaur eats everything in sight, including their only way home- the rocket! How will Dino get them back home? There's poop, planets and pandemonium in this supersonic space adventure!"
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