[Suicide Junkie]

Why would being infinite force there to be addition/subtraction of matter?

It would start out infinite in extent with a finite density and as it stretches, the density goes down.


The conductive tether cutting through the magnetic field of the earth is a handy battery.
But the energy is coming from your orbital speed, which you got using the main engines. Of course, that does make it conveniently easy to deorbit without needing onboard fuel. Excellent for old satellites to ditch themselves once their useful life is up.