This is the first book of its kind ever published! It is the only publication so far that has included such a representative collection of space images of this region acquired by Earth observation satellites and spacecraft launched by different countries over the past 25 years. They include examples of images acquired by almost all the spaceborne remote sensors from which imagery is currently available to the general public. This collection of images is truly spectacular.

This volume is designed to demonstrate the use of space images in the form of both photos and digital data to detect environmental changes in Hong Kong and the Pearl River Delta.

The book consists of two parts. Part I contains a collection of fascinating space photos/satellite images and Part II comprises seven well illustrated essays.

Published for the first time are space photos of Hong Kong obtained by U.S.A.'s intelligence satellite in the 1960s (declassified in 1994) and Russian space mapping satellite in the 1980s. What details can be revealed by such spy photos? You will find the answers from this book.

How different features which are not easily discernible on the ground can be vividly highlighted by enhancement methods? You will be enlightened by various enhanced images presented in this book.

What are some of the practical applications of imaging the Earth from space? They are amply elucidated by specialists in their well illustrated essays published in this book.

This unprecedented volume makes fascinating reading for the general readers and provides the professionals with a valuable resource of geo-data for the study of developments in Hong Kong and the Pearl River Delta. This book gives the glimpses of Hong Kong that are truly "out of this world"!

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