NASA is asking for help in transforming astronaut poo into "space gold".

Spaceship

Spaceship

The space agency is looking to work out how to recycle human waste - including faeces, the carbon dioxide breathed out and foam packaging materials - as they are unsure how to create the 'space gold'.

NASA believes that doing so will enable astronauts to go on longer missions without being restricted by the amount of resources they need to bring.

The US agency have launched a crowdsourcing challenge called Waste to Base Materials Challenge: Sustainable Reprocessing in Space.

The person or the team who comes up with the best idea will earn a $24,000 prize with separate $1,000 prizes awarded for the best idea in each individual category.

A description of the challenge states: "We are looking for your ideas for how to convert different waste streams into useful materials that can then be made into needed things and cycled through multiple times, and we are looking for ideas to convert waste into propellant."