QUESTION: If the problem of Pathfinder is with the cold now because of the failure of the batteries and the nearing winter, would it be possible if the Pathfinder mission is stopped and then continued when summer comes again? ANSWER from David Mittman on November 7, 1997: The Martian summer will raise temperatures on the surface and perhaps make communications possible again. However, if some of the hardware has broken as a result of temperature extremes, then the arriving summer will not fix the problem. Also the Martian year is almost twice the length of the Earth year, so the time until Summer is many months away.