John Callas Browse All Authors Top 4 quotes by John Callas We have and will continue to use multiple techniques in our attempts to contact the rover, these new command strategies are in addition to the sweep and beep commands we have been transmitting up to the rover since September. John Callas science The project team is very concerned. John Callas science So we should be able to ride out the storm. When the skies clear and the rover begins to power up, it should begin to communicate with us. John Callas science This is the first time any human enterprise has exceeded the distance of a marathon on the surface of another world, a first time happens only once. John Callas top-news
