Visual data: missions to Mars

Going to Mars isn't easy, although the mission success rate has improved since the 1960s. In chronological order (counter-clockwise from top-left), missions to the red planet are color-coded by country, with the longest lines representing the most sophisticated missions. (Even old-fashioned bar graphs can be compelling in the hands of a sharp designer.) Hat tip: FlowingData.com via FastCompany.com via WeLoveDatavis. Original source unknown....