If they looked up, they would see the two Saturns crossing the sky every 1.6 days, appearing half as large as the moon.
这些外星人仰望天空时，他们将会看到两颗土星每隔1.6天，交替在天空中划过，大小只有月亮的一半大。
3
But because the Saturns would rise at different times every night, the hypothetical alien civilization would have a hard time using its companion planets to tell time or create a calendar.