<classify> Iza kuhamba kunxweme olusentshona kumantla eCalifornia kwaye iya kukhanyisa isibhakabhaka ukusuka eCalifornia ukuya kumbindi weOregon idlule phakathi eNevada naseIdaho naphakathi e-Utah, uTom Duxbury, umphathi weprojekthi kaStardust utshilo.  <topic>: sciencetechnology 