We've Observed Mars for Decades, But Still Have No Big TheoriesRobbie Gonzalez7/26/14 4:00pmFiled to: spacemarsscienceastronomyastrogeology142EditPromoteShare to KinjaToggle Conversation toolsGo to permalinkMars geologist Phil Christensen says we're still short on understanding the red planet. "The devil continues to be in the details," he said at this week's Eighth International Conference on Mars. Astrobiologist David Des Marais said Mars research today adds up to "lots of observations but no overarching [breakthroughs]."ShareTweet Kinja is in read-only mode. We are working to restore service.