A project by NASA is looking at how to effectively water plants in space. The space agency is a step closer to working out how to feed astronaut crews during long-duration missions, that could last anywhere between weeks and years in space.

Providing adequate hydration to plants' roots has proved an issue in zero gravity, with the NASA team trialling using hydroponics, meaning no soil was needed for the plants.

The project completed its first space station operations at the end of February, with the final iteration finalized in early April. The team hopes further tests will be conducted in the future.