File - An undated file image released by NASA shows a self-portrait of NASA’s Mars rover Curiosity. After back-to-back computer problems, the six-wheel rover has resumed its science ex

 

              File - An undated file image released by NASA shows  a self-portrait of NASA’s Mars rover Curiosity. After back-to-back computer problems, the six-wheel rover has resumed its science ex
File - An undated file image released by NASA shows a self-portrait of NASA’s Mars rover Curiosity. After back-to-back computer problems, the six-wheel rover has resumed its science experiments. (AP Photo/NASA)