Google Mars was at first an in-browser version of Google Maps which provides a visible imagery view, like Google Moon, as well as infrared imagery and shaded relief (elevation) of the planet Mars. Users can toggle between the elevation, visible, and infrared data, in the same manner as switching between map, satellite, and hybrid modes of Google Maps. In collaboration with NASA scientists at the Mars Space Flight Facility located at Arizona State University, Google Mars provided the public with data collected from two NASA Mars missions, Mars Global Surveyor and 2001 Mars Odyssey.