What a long, wonderful trip it has been for Spirit and Opportunity, the Mars Exploration Rovers. Planetary Society reporter Salley Rayl has been writing about their adventure every month for ten years as AJS Rayl. She looks back on this week’s show. Emily Lakdawalla and Bill Nye the Science Guy also look back at the top space stories of 2013. Bruce Betts looks back in every episode as he reviews This Week in Space History. He and Mat Kaplan give away a Year in Space wall calendar.