Planetary science. Majority rules in finding a path for the next Mars Rover.
Kerr
Richard A
RA
D005118:Extraterrestrial Environment; D005290:Ferric Compounds; D018535:Mars; D018531:Spacecraft; D014481:United States; D018557:United States National Aeronautics and Space Administration; D014867:Water
D005290:Ferric Compounds; D014867:Water; C000499:ferric oxide