Credit: NASA/JPL-Caltech

Catching up on our robot friends in space, we find that:

Cassini has switched to a back-up set of thrusters following somewhat understandable degradation of its main engines after eleven years of use.

Spirit and Opportunity are both engaged in long treks across the Martian wastes, although Spirit, dragging a useless wheel behind it, has just had to reconsider its route.

(Image above taken by Spirit. Clearly there are better places to be if you're a disabled robot that has trouble with steep inclines.)

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