Hydrogen fusion in the Sun requires a temperature (in Kelvin) of?

Theoretically yes, in practice it would be very difficult. It takes 4-21 minutes for light to get to Mars, which is the upper limit as to how fast things can go. So yes, a few hours is certain compliant with the laws of physics, at least inasmuch as something could indeed go that fast.

The problem is more an engineering challenge- actually getting something to go that fast would require very powerful thrust indeed, and currently we have no rocket technology that could sustain that level of thrust for any reasonable amount of time- we could produce this amount of thrust, but only for short-term periods of the fuel requirements become too high. Also, as a few have pointed out, the level of acceleration needed to do this would be very dangerous for any humans on board.

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.