This looks almost identical to my cat, just a couple little spots that are different

How do you think they got to be that high in the first place?

Really cool, but is it a fair coin?

If the only thing acting on stars is gravity, then they will stay in their elliptical orbits undisturbed and the overall shape of the galaxy won't change.

It's only once you start adding drag and friction into the mix from gas clouds and nebulas that the forces necessary to collapse the shape into a disc are present. With those gases, a galaxy will eventually collapse into a disc, but without them, there's no reason for them to do so.

Most elliptical galaxies are very old, and no longer have any new star formation. This means far less drag and friction, meaning no forces to flatten the orbits of stars within the galaxy, meaning it will remain an elliptical galaxy forever

As just a single chain? No, I think you'll always at least end up with a couple of Hydrogen atoms at the ends.

However, carbon nanotubes can be very long molecules and are comprised of just a single element (carbon). They aren't a single large chain, but rather a hexagonal lattice (graphene) that has been rolled up into a cylinder