Yesterday, January 3rd, 2008, marked Spirit's fourth Earth year on Martian soil. Its been a long journey so far, with many ups and downs. Most recently, Spirit struggled to make it to Home Plate in time for winter. As you can see below, Spirit made it, but just barely.
Image Courtesy of NASA/JPL-Caltech/Cornell University.
In this PanCam image (which is approximately true color), one can truly get an idea of how far the rover has trekked. It landed at about the center of the horizon in this image.
Here's to 4 more years!