A human-sized robot is being developed in Edinburgh in preparation for missions to Mars.

Experts from the University of Edinburgh and NASA are working to give the 1.8 metre machine, which can already walk and perform basic movements, more advanced skills.

It is hoped the 125kg robot, named Valkyrie, will be able to use sophisticated on-board sensors to help it make sense of its environment and improve its manoeuvrability.

Researchers are also keen to further develop the robot's ability to interact closely and safely with humans and other machines.

The Valkyrie is the only robot of its type in Europe, and one of three prototypes in the world.

NASA hopes to equip the Valkyrie to go to the Red Planet many years before astronauts are able to make the journey.

Valkyrie's human-like shape is designed to make it flexible enough to work alongside people, or carry out high-risk tasks instead of humans.

The project is supported by the Engineering and Physical Sciences Research Council, and is conducted at the Edinburgh Centre for Robotics, a joint initiative between the University of Edinburgh and Heriot-Watt University.

Download: The STV News app is Scotland's favourite and is available for iPhone from the App store and for Android from Google Play. Download it today and continue to enjoy STV News wherever you are.