本书共分5部分，分别是浩渺无垠的宇宙、银河系和河外星系、太阳大家庭、探天仪器和探天活动、有趣的天文知识，并分门别类地加以介绍。由于时间仓促和资料有限，再加上视野所限，书中定会有些许不足之处，在此敬请读者给以理解；对于书中不对不妥之处，也请读者给以批评和指正。( This book includes five parts in total, namely the boundless universe, galaxy and extragalactic system, solar system, spacecraft and space exploration and interesting astronomic knowledge. The knowledge is introduced in different categories. Due to the limited time, information and horizon, this book must have some inadequacies, so please show your tolerance while reading it and meanwhile tell us to correct any mistake in the book.)