What would be the effects of traveling faster than light on a worldship?

Assuming a civilization has the technology and capability to build a worldship, a planet that doubles as a spacecraft, installs an FTL drive on it and has the energy to power it, what would the effects be, on the object and it's inhabitants, of traveling at speeds faster than light?

There are two cases that I'm interested in:

1. They use an Alcubierre Drive and modern relativity applies.

2. They use a non-gravitational form of propulsion (like a rocket engine) and relativistic effects do not apply "” in essence, a universe where Newtonian gravity (or modified Newtonian gravity) is a precise description of gravitational effects.

I am not interested in how it is achieved "” assume the planet remains spherical and doesn't have the drive protruding out its back.

What would happen to the planet structurally, atmospherically, its surface and inhabitants?

posted about 10 years ago

mechalynx‭

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