Spirit has been working on Mars for more than 500 sols! This week the rover completed its close-up observations of "Larry's Outcrop" and drove back toward "Methuselah," looking for a passable way up to the summit. The rover will continue to drive around the perimeter of "Husband Hill" until it finds a good pathway.

Sol-by-sol summaries:

Sols 497 and 498 (May 27 and 28, 2005): Spirit used tools on its robotic arm at west Larry's Outcrop and made remote-sensing observations.

Sols 499 to 501: Spirit continued using the tools on the arm to examine the outcrop and soils. It also made more observations with tools on the camera mast.

Sol 502: Soil observation; remote sensing.

Sol 503 (June 2, 2005): Finished soil work, took microscopic images of outcrop, drove toward Methuselah.