On this day it was launched by the Soviets. This was the first spacecraft to orbit the moon and return. On September 18 of the same year, it orbited the moon. Turtles, wine flies, meal worms, plants, seeds, bacteria, and other living objects were on the flight. According to the Russian Academy of Sciences, in the pilot's seat was a 175 cm tall, 70 kg mannequin containing radiation detectors.