二十五年前开始的在茫茫宇宙寻找智慧生物的工作即将进入一个新纪元。这种令人敬畏的工作包括对上万亿的星球进行射电扫描,但迄今还未找到地球以外存在生物的确凿证据。虽然如此,有关球外文明生物的新发现,以及寻找这种文明生物的新方法,还是在吸引着科学 Twenty-five years ago, the search for intelligent creatures in the vast universe is about to enter a new era. Such awesome work includes radio-scanning the trillions of planets, but so far no solid evidence of the existence of a creature outside Earth has been found. Nonetheless, new discoveries about civilized organisms outside the ball, and new ways to find such civilized creatures, are still attracting science