Astronauts will travel in an Apollo-like capsule called Orion that will launch on a powerful rocket called SLS.

Speaking on Monday afternoon (US time), Nasa administrator Jim Bridenstine said: "The $28bn represents the costs associated for the next four years in the Artemis programme to land on the Moon. SLS funding, Orion funding, the human landing system and of course the spacesuits - all of those things that are part of the Artemis programme are included."