Spirit Dragging a Wheel

Those two crazy rovers are still rolling, but perhaps just barely. Spirit seems to be dragging a wheel that has stopped working.

These things deserve medals. They were supposed to last 3 months, and here they are 2 years later still roaming the rough Martian surface. Despite dust-covered solar panels and busted wheels, they keep on exploring.

Here's a shot of some salty-looking formation Spirit ran across.