China would be closely watching the US Artemis 2 lunar fly-by mission, which has already encountered challenges, including a malfunctioning toilet soon after launch, an expert said. As China gears up to bring astronauts to the moon, the first human return to lunar orbit since the Apollo era over 50 years ago could offer Beijing valuable technical insights. Quentin Parker, a professor of astrophysics at the University of Hong Kong, described China as watching the Artemis 2 mission “like a...