The New Shepard rocket and capsule system developed by US billionaire Jeff Bezos has had to abort a mission mid-flight over the Texas desert.

Bezos rocket malfunctions on trip to space© Blue Origin

The rocket experienced what appeared to be a propulsion failure about one minute after leaving the launch pad.

A motor pushed the capsule clear, enabling it to make a soft return to the ground with the aid of parachutes.

New Shepard regularly carries people, but on this occasion the only payload was a batch of Nasa experiments.