After 10 days of recovery work, engineers at NASA have given Spirit a clean bill of health; the rover is now booting up normally. The recovery happened after controllers deleted thousands of files loaded up in the rover’s memory; most of which was stored up from the seven-month flight from the Earth to Mars. The engineers are still planning to completely wipe the memory to start with a clean slate, and then reinstall all the software. Spirit will continue examining a rock called Adirondack later this week with its suite of scientific tools.