Removing such a huge mass from the solar system is a larger endeavor than most believe. Believe it or not, even Pluto at a mass of 10^22 kilograms and a distan

Removing such a huge mass from the solar system is a larger endeavor than most believe. Believe it or not, even Pluto at a mass of 10^22 kilograms and a distance between 4 and 7 billion kilometers is still bound by the sun's gravitational well. To just "throw something out of the solar system" without the potential for it to disintegrate and come back at us in the future is an incredibly difficult feat. To have the mass of some kind of life sustaining cylinder capable of supporting the activities you've listed coming at us at solar orbital speeds would be a catastrophe our local nuclear wars could only hope to emulate. There seems to be a pervasive belief that we can just eject huge quantities of mass from the very strong, very isolated gravitational well we are bound to. To say nothing of the possibility of building such a cylinder, the realities and consequences of the situation are far more dangerous than people yet consider.