Our Place in the Universe - Kwok, Sun

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Résumé :
If you have ever wanted to understand the basic principles of astronomy and celestial movements, you should read this book. Using pictures of the sky observed from different places on Earth, as well as drawings of ancient astronomical methods and tools, Prof. Sun Kwok tells this story in an entertaining and fascinating way.Since the beginning of human civilization, people have wondered about the structure of the cosmos and our place in the Universe. More than 2,000 years ago, our ancestors knew that the seasons were unequal, the Earth was an unattached object floating in space, and stars existed that they could not see. From celestial observations, they concluded that the Earth was round. Using simple tools and mathematics, ancient astronomers accurately determined the sizes of the Earth and Moon, the distance to the Moon, and the lengths of the months and year. With a clever device called the armillary sphere, Greek astronomers could predict the times of sunrise and sunset on any day of the year, at any place on Earth. They developed sophisticated mathematical models to forecast Mars' motions hundreds of years into the future. Find out how ancient observers achieved these remarkable feats. With minimal use of mathematics, this book retraces the footsteps of our ancestors, explains their intellectual journeys in simple terms, and explores the philosophical implications of these discoveries. ...

Biographie:
Prof. Kwok is a Chair Professor of Physics and Dean of Science at The University of Hong Kong. Previously, Prof. Kwok served as Faculty Professor of the University of Calgary in Calgary, Canada, and Director and Distinguished Research Fellow of the Institute of Astronomy and Astrophysics of Academia Sinica of Taiwan. Professor Kwok is widely acknowledged as the world-leading expert in the study of planetary nebulae, a class of spectacular-looking objects formed near the end of a star's life. His theory on the origin of planetary nebulae has revolutionized our understanding of the death of Sun-like stars. More recently, he has found that planetary nebulae can rapidly synthesize large amount of complex organic compounds, as well as widely spreading them throughout the Milky Way Galaxy...

Sommaire:
Sun Kwok is a leading world authority on the subject of astrochemistry and stellar evolution. He is best known for his theory on the origin of planetary nebulae and the death of Sun-like stars. His recent research has been on the topic of the synthesis of complex organic compounds in the late stages of stellar evolution. He is the author of a number of books, including Cosmic Butterflies : The Colorful Mysteries of Planetary Nebulae....