外星人须知
The golden records placed aboard Voyager 1 and 2 each have a cover with special etchings, seen here in this photo from Sept. 4, 1977. These drawings show how the record should be used to receive a message from Earth.
For example, the drawing in the bottom right corner is of the phonograph record and the stylus carried with it; the stylus is in the correct position for the record to be played from the beginning. The lines around the record mark the time of one rotation of the record, 3.6 seconds, in binary arithmetic. The drawing also indicates that the record should be played from the outside in.
The Golden Record itself contains 115 images and a variety of natural sounds, such as those made by surf, wind and thunder, birds, whales, and other animals, as well as musical selections from different cultures and eras, spoken greetings from Earth-people in fifty-five languages, and printed messages from President Carter and U.N. Secretary General Waldheim. The contents of the record were selected for NASA by a committee chaired by Carl Sagan.
Discover what the other drawings on the Golden Record cover reveal.
Image Credit: NASA/JPL-Caltech
放置在旅行者1号和2号上的金唱片每张都有一个带有特殊蚀刻图案的封面，如这张1977年9月4日的照片所示。这些图案展示了如何使用唱片来接收来自地球的信息。
例如，右下角的图案展示了留声机唱片和随附的唱针；唱针处于可以从头开始播放唱片的正确位置。唱片周围的线条以二进制算法标示了唱片旋转一周的时间，3.6秒。图案还指示唱片应从外向内播放。
金唱片本身包含115张图像和各种自然声音，如海浪声、风声、雷声、鸟叫声、鲸鱼声和其他动物的声音，以及来自不同文化和时代的音乐选段，55种语言的地球人问候语，以及卡特总统和联合国秘书长瓦尔德海姆的书面致辞。唱片的内容是由卡尔·萨根主持的委员会为NASA挑选。
图片来源：NASA/JPL-Caltech