NASA&amp;#39;s Jet Propulsion Laboratory (JPL) released a set of &amp;quot;travel posters&amp;quot; depicting various cosmic destinations. This poster shows Mars as a habitable world. The posters -- the brainchild of The Studio, the design and strategy team at JPL -- are a way to celebrate the discovery of planets. JPL visual strategist David Delgado says of the designs: &amp;quot;All of these far off places are hard to get to, but they are there. The immediate thought was, if we could go there someday, what would it be like?&amp;quot; 