Nasa is one step closer to taking astronauts around the moon for the first time in more than 50 years.

The astronauts who were evacuated from the International Space Station last week have spoken publicly for the first time about their emergency medical evacuation. It was NASA's first medical evacuation in 65 years of human spaceflight.

The astronauts evacuated last week from the International Space Station say a portable ultrasound machine came in “super handy” during the medical crisis.