http://www.spaceflightnow.com/news/n1105/24spirit/
NASA closes book on Spirit rover's historic mission BY STEPHEN CLARK SPACEFLIGHT NOW Posted: May 24, 2011 NASA's immobilized, crippled Spirit rover likely succumbed to cold temperatures during the last Martian winter, and officials will cease attempts to regain contact with the intrepid robot this week, the agency announced Tuesday. <more>

