I demand that you look at what these mice do when they are sent in a cage to outer space, courtesy of NASA and a new study. This new study aims to better understand the adaptations of the mouse to microgravity. If you have read the book Ender's Game, you probably already know what is to be seen.
In general, you only have the opportunity to play, that's just a surface. Now imagine that you are a friendly little animal and, suddenly, your limited space expands in a way you have never imagined before. You can play on ALL surfaces.
And perhaps most importantly (for the purposes of our viewing pleasure), you can run on all surfaces. See how the whole of the living space becomes the wheel of the mouse. See how microgravity becomes the BEST FRIEND of a mouse.
People at the NASA Ames Research Center responsible for the study showed that the younger mice in the group seemed more active in microgravity than on Earth. The same group is shown in the previous video, which shows a behavior that researchers describe as "career tracking".
It started with a mouse or two, and eventually it became a group event. It's like the lemmings of the video game, but for fun.
You know what this reminds me of? The Death Sphere they use in the circus, with motorcycles, and the action that defies gravity. Next, you will see most of the motorcycles in a death dial, as presented by Guinness World Records, just so you know what I'm talking about.
Back in space, this mouse behavior study used a habitat module for rodents that looks surprisingly like a standard desktop computer on its side. The study was carried out over 37 days in microgravity. For a mouse, that is a relatively long time.
If you look at the general life span of a mouse versus a human, two mouse years are about 70 human years. So these mice were there for 1/24 of their whole lives, or about 14 years (if we turned directly into human years).
The mice were treated well throughout the trip and showed "almost the same" weight before and after the mission. Their coats were also apparently in "excellent condition" everywhere. You can learn more about the study at NASA right now.