**"NASA mission controllers**have not heard from Mars rover Spirit since March 22 as the rover faces its toughest challenge yet - trying to survive the harsh Martian winter.
Spirit Phone Home (stuck, 200px)
Last year, Spirit became stuck in loose sand. This prevented the rover from driving to a sun-facing slope for the winter.
On July 26, mission managers began using a paging technique called “sweep and beep” in an effort to communicate with Spirit."
It has been a wonderful mission up till now, 6 years of faithful service and I know it would come to an end soon but I found this rather sad