NASA's Space Launch System rocket was back on the move overnight ahead of its second mission to the moon, which will be the first time the vehicle carries a crew.

Nasa's giant Moon rocket has returned to its launch pad for a second time, ahead of a mission to send astronauts around the Moon – something not attempted in more than 50 years.

NASA is targeting April 1 as the earliest possible launch of the rocket sending NASA astronauts Reid Wiseman, Victor Glover, and Christina Koch, along with CSA (Canadian Space Agency) astronaut Jeremy...