We know about them because a clay tablet bearing a record of these ancient observations, called the Venus Tablet of Ammisaduqa, was made 1000 years later and has survived largely intact.
我们之所以知晓这些事情是因为在古巴比伦人的泥板文书上都有相关的记载。 后人将它称之为阿米萨杜卡金星泥板(Venus Tablet of Ammisaduqa)，记录于该段文字1000年之后，大部分都完好地保存了下来。