Which space organization launched the hubble space telescope?

The assumption is that similar stars shine with the same brightness. So it is only necessary to compute the distance of one star and the rest can have their distance computed by seeing how bright they are compared to the standard candle --- and using the inverse square law. The difficulty is being sure that the stars you compare are of the same type.

There are assumptions in most distance computations.

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.