NASA Mars volunteer crew prepare for end of mission

What would it be like to live on the planet Mars?

That's exactly what a crew of four volunteers have been finding out for the last year.

They've been living in a small space which was specially built to simulate life on Mars.

It's all part of a Nasa Mars mission which is expected to end on Saturday 6 July.

The team of four first entered the Crew Health and Performance Exploration Analog (CHAPEA) habitat, which is based at NASAâ€TMs Johnson Space Centre in Houston, Texas, on 25 June last year .

You've got a chance to ask them any question you like about their experience living in a Mars-type environment - just get in touch by leaving your question in the comments below.

The space the volunteers have lived in for the past 378 days is 3D printed, consisting of four bedrooms, a dining/living area, a workspace with a vertical farm to grow things and a medical room.

During their time in the habitat, the crew members carried out various experiments to measure the impact of life on Mars for possible future missions to the red planet.

Crew members took part in a number of simulated "Mars walks", and also spent time dealing with problems like communication delays with Earth and the maintenance of equipment in tough conditions.

Nasa is leading a return to the Moon for long-term science and exploration.

The US space agency is looking to land the first woman, the first person of colour , and the first international partner astronaut on the Moon, using new technologies to explore more of the lunar surface than ever before.

It's hoped lessons learned on and around the Moon, and through activities like CHAPEA on the ground, will prepare Nasa for the next big step, which is to send astronauts to Mars.