People think travelling through space takes a long time. Doesn't the theory of relativity prove it' shorter?

Relativity does take into account energy expenditure. At relativistic speeds mass is a function of velocity. As v approaches the speed of light, it takes increasing amounts of energy to increase speed.

But, what you are talking about is more on the level of Newtonian mechanics. E = 1/2 mv^2 if m is a rocket m is small if m is the earth m is very large.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.