Technical problems with fuelling its giant new moon rocket forced Nasa to call off its second attempt at a launch in less than a week.
The US space agency’s engineers struggled for more than three hours on Saturday to contain a leak in a hydrogen line being used to fill one of the tanks on the core part of the rocket, but abandoned the effort more than two hours before the scheduled blast-off.
The leak was the latest in a string of technical glitches that have delayed the first launch of the SLS rocket, which the US hopes to use to take astronauts back to the moon in 2025.
您已阅读24%（577字），剩余76%（1803字）包含更多重要信息，订阅以继续探索完整内容，并享受更多专属服务。