NASA's mega rocket has been moved to the launch pad in Cape Canaveral, Florida, as the final preparations get underway for the first crewed mission to the Moon in more than 50 years.
Over almost 12 hours, the 98m-tall Space Launch System was carried vertically from the Vehicle Assembly Building on the 4-mile (6.5km) journey to the pad.
Now it is in position, the final tests, checks - and a dress rehearsal - will take place before the go-ahead is given for the 10-day Artemis II mission that will see four astronauts travel around the Moon.
NASA says the earliest the rocket can blast off is February 6, but there are also more launch windows later that month, as well as in March and April.
The rocket began moving at 07:04 local time (12:04 GMT) and arrived at Launch Pad 39B at the Kennedy Space Center at 18:41 local time (23:42 GMT).
It was carried by a huge machine called a crawler-transporter, travelling at a top speed of 0.82 mph (1.3 km/h). Live coverage captured the slow-moving spectacle.
NASA said the rocket will be prepared for what it calls a wet dress rehearsal - a test for fuel operations and countdown procedures.
The Artemis II crew - Reid Wiseman, Victor Glover, Christina Koch, and Canadian astronaut Jeremy Hansen - were at the Kennedy Space Center watching the rocket as it was moved.
In a few weeks, the astronauts will be strapped into a spacecraft, perched on the top of the rocket, ready to blast off to the Moon.
This mission is particularly significant as it marks the first crewed attempt to return to the Moon since Apollo 17 in December 1972.
The mission, though, intends to lay groundwork for future lunar landings, especially with Artemis III projected for no earlier than 2027.
The astronauts will spend the first two days in orbit around the Earth before venturing nearly 250,000 miles to the Moon, conducting various observations during their journey.
