The latest trio — Zhang Lu, Wu Fei and Zhang Hongzhang — are the crew of the Shenzhou-21 mission, whose return capsule was taken home by the Shenzhou-20 crew following a potential space debris collision that rendered their original capsule inoperable.

A fresh wave of conspiracy theories surrounding the interstellar object 3I/ATLAS has prompted astronomers to issue public warnings about the spread of misinformation. The comet, only the third interstellar visitor ever detected, has become the focus of ...