Could we start over from the Stone Age?

Assumptions, Part 2: Spaceside
Last week, I summarized the assumptions that I’m making about any planet to which humans might eventually travel. Note that this would include Earth, if a generation ship traveled with a constant acceleration long enough to reach a significant fraction of the speed of light, such that the time dilation effect returned them to an…

The Spaceship
There are several things to think about: the design of the ship, the size it would need to be, power generation, how to provide gravity, how to produce food and water, and propulsion. It seems to me that one, if not the, major problem to solve for this type of voyage on this type of…

Assumptions, Part 1: Dirtside
Before we can begin to investigate the possibility of successfully rebuilding civilization, we first need to describe our set of assumptions. For the purposes of this web site, we’ll have two sets of assumptions: one for the situation and conditions of “interstellar” travel (that is, the trip from one habitable planet to another, on what…