摘要
The three phases of outer spaceexploration are:the launch ofman-made satellites,mannedspace ight and lunar explora-tion.After more than 50 yearsof perseverance,Chinese scien-tists,relying solely on their ownexpertise and technical know-how,have become the world'sthird most signi cant explorersof outer space.
The three phases of outer spaceexploration are：the launch of man-made satellites,mannedspace ight and lunar exploration.After more than 50 yearsof perseverance,Chinese scientists,relying solely on their ownexpertise and technical knowhow,have become the world＇sthird most signi cant explorersof outer space.
