The stresses on a cube-shaped planet would certainly make it very unstable (earthquakes etc.). It would be miraculus if higher life could evolve on this world, let alone civilization.
Okay, but what if we could pretend that the gravity on the entire surface was constant, so that the atmosphere was similarly cube-shaped. How would the shape affect navigation? and how about the horizon? Wouldn’t the corners be considerably hotter than the sides, because of their proximity to the sun? Would the amount of daylight on any given side be relatively constant because of no curvature? (in other words, wouldn’t sunrise occur pretty much simultaneously to all inhabitants of one side?)
Overall, I think the best way to approach this as a gedankenexperiment is, instead of coming up with an imaginary cube in space and trying to get your mind around that, is to imagine building six pyramidal mountains on the existing earth, such that a cube is formed with the sides tangental to the Earth’s crust. After doing that, one can plainly see that the mountain peaks/corners are beyond the limits of the current atmosphere, and one can easily imagine standing on the mountain as one would stand on a ramp, mountainside, or hillside today and feel the fact that the surface is not perpendicular to the gravity they feel.
So, at the center of a face, assuming that you cleared all the water away, would feel normal. As you walked, you would feel the slope rising.
Now, barring weather and atmosphere, you could probably see all the way to the local corners/edges since there will be no horizon. That might mess you up mentally if you are from sphere earth.
I agree that the water would form into blobs on the faces. Anywhere you sailed on this blob, you would feel normal, as if you were sailing on earth. All around you would appear to be mountains, as if you were sailing in an enclosed sea. To wrap your head around this, imagine the existing earth. Take your Acme DeathStar and slice off a section, leaving a flat face. Replicate enough water to fill in the land you cut out and pump it onto that face. Eventually you will get an earth that looks fairly normal from space, but that has a very deep sea somewhere.
Can Zombies live on a cube Earth?
I think you probably meant to post this in the current thread on cube earth, rather than in this one, which is eight years old.
Feel free to repost your answer in the current thread. To prevent further confusion, I am closing this one.
Colibri
General Questions Moderator