Nasa's Artemis II mission has passed every major test since its launch on 1 April, with its rocket, spacecraft and crew performing better than engineers had dared to hope for.
The mission's first six days have shown that the Orion capsule works as designed with people on board for the first time - something no simulator could prove.
Perhaps its greatest achievement, though, is through the actions of the Artemis crew, which have generated hope, agency and optimism for a world appearing to be in desperate need of inspiration.
But the bigger question remains - is a Moon landing by 2028, as Nasa and President Trump want, now really an achievable goal?
A few days after Nasa's Space Launch System (SLS) reached the launch pad at Kennedy Space Centre, the most important lesson about Artemis II had already been learned.
