Nasa rover begins journey in search of life on Mars
26 November 2011 Last updated at 21:28 GMT
Nasa has launched its most ambitious rover mission to Mars - starring a 900kg robot that will look to find out whether the planet is, or ever has been, suitable for life.
An Atlas 5 launch rocket carrying the six-wheeled vehicle blasted off from Cape Canaveral, Florida at 10:02 local time (15:02 GMT) on Saturday.
Nicknamed Curiosity, the rover will take eight and a half months to cross the vast distance to its destination.
Jonathan Amos reports.