Zebrafish, grain experiments answer cosmic questions

On China's space station orbiting 400 kilometers above Earth, scientists are conducting a series of astounding laboratory experiments.

From zebrafish that lay eggs to rice that completes an entire life cycle, to fruit flies performing acrobatics, these fascinating space research projects are providing crucial clues for humanity in exploring the mysteries of life.

In April last year, four zebrafish measuring about three centimeters were brought aboard the Chinese Space Station by the Shenzhou XVIII crew.