Mars in winter. Screen grab from the spectacular interactive 360° panorama assembled from images taken by the rover Opportunity between December 2011 and May 2012. The trusty rover (foreground) has been on the red planet since 2004 and is still active.

Mars in winter. Screen grab from the spectacular interactive 360° panorama assembled from images taken by the rover Opportunity between December 2011 and May 2012. The trusty rover (foreground) has been on the red planet since 2004 and is still active.