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 flying piece of cosmic rock or an alien threat? Comet 3I/ATLAS is hurtling through our solar system and captivating scientists and internet users alike, even prompting Kim Kardashian to ask NASA for answers.

Space agency NASA is monitoring two large bus-sized asteroids passing through Earth this week. NASA is closely keeping a watch on 2051 VPI and 3361 Orpheus amid the growing mystery surrounding interstellar comet 3I/ATLAS.