The National Aeronautics and Space Administration has been preparing the giant Space Launch System (SLS) for its maiden flight, set for March.

The SLS is housed in the Vehicle Assembly Building (VAB) at Nasa's Kennedy Space Center, in Florida.

When the Orion spacecraft is stacked on top, the full system stands 98m (322ft) high - taller than the Statue of Liberty.

This SLS is being prepared for a mission called Artemis-1, which will see the rocket launch Nasa's Orion spacecraft towards the Moon.

The mission is intended to test SLS and Orion systems ahead of the first crewed launch, in 2024.

The culmination of testing for the Artemis-1 hardware is the wet dress rehearsal, where the SLS is rolled out to the launch pad at Kennedy and loaded with its cryogenic (cold) liquid propellants.

The mission known as Artemis-3 will see the first people land on the lunar surface since the Apollo 17 mission, in 1972.

The crew members who will touch down on the Moon as part of this mission have yet to be announced but Nasa is training a select pool of astronauts to fly the Orion spacecraft?