As NASA explained in a recent blog post, scientists sent specially designed squirrel cages to the International Space Station along with small furry rodents. Through live video broadcasting, ground science teams were allowed to observe the behavior of rats remotely, and then shared with us such a video.
As you can see in the video, the mice did not feel comfortable at first, and tried to move in the cage to find out which way to get out. But soon the mice adapted well to the new environment and began to use the advantage of weightlessness to reach a certain location in the cage.
On the 11th day of the experiment, the mice not only adapted to the weightlessness environment, but also seemed to be "enjoying" the pleasure of weightlessness. In the video, you can see several rats running around the cage, using the fence as a hamster wheel. NASA researchers wanted to see if mice would continue to do the same activity they observed on Earth. Studies have shown that rats maintain most of their daily lives, including self-grooming and eating when they are hungry.