Artemis 1: Nasa’s moon rocket springs hazardous leak ahead of launch

Nasa’s rocket at Cape Canaveral, Florida, after the first launch was abandoned over an apparent issue with an engine cooling system. Photograph: Nasa/Getty Images

Nasa’s pioneering moon rocket sprang a hazardous fuel leak Saturday, throwing into doubt chances of a successful launch on a test flight that must go well before astronauts climb aboard.

The Artemis 1 was poised to make a second attempt to fly on Saturday afternoon after the US space agency declared it had identified and fixed an engine issue that caused the postponement of the original launch attempt five days earlier.