Activity for Admiral Jota‭

Type	On...	Excerpt	Status	Date
Question	—	How can Ganymede have an Earth-like gravity without us having realized it? Imagine a small primitive humanoid civilization that developed independently in caves under the surface of Ganymede. We can assume there's enough light that filters through the crystalline surface to support life, and that there's enough air trapped in these caves for them to breathe. But let's say... (more)	—	about 6 years ago