Animated image of the Orion capsule
Media playback is unsupported on your device
Video

Nasa's latest mission could bring humans closer to Mars

The US space agency Nasa is to carry out a test launch, which it hopes will eventually allow astronauts to travel to Mars.

The maiden voyage of the unmanned Orion capsule will blast off from Cape Canaveral, in Florida.

Science correspondent Pallab Ghosh reports.

Go to next video: Girl, 13, could be first human on Mars