여러분께선 제가 거짓말을 했다고 하시겠지만 그렇지 않습니다. 탐사 로봇들이 90~100일간 작동할 줄 믿었습니다. 왜냐하면 동력이 태양인데 화성은 먼지가 많은 행성이라서 먼지가 표면에 쌓여 시간이 지나면 작동 전력이 부족할 거라고 생각했으니까요.
Now you say, Charles, you are really lying to us, and so on, but that's not true. We really believed they were going to last 90 days or 100 days, because they are solar powered, and Mars is a dusty planet, so we expected the dust would start accumulating on the surface, and after a while we wouldn't have enough power, you know, to keep them warm.