No one has the sole, legal authority to sell ownership rights on celestial objects. Although the Outer Space Treaty prohibits governments from owning celestial objects, some of these websites will argue that the treaty doesn't prohibit private individuals from doing so. However, the treaty does state that in order for any such sale to be legal, it would require authorization by the government of the entity making the sale.
So, if a company located in the U.S.A. is trying to sell you a star, you would have to get the United States government to authorize the sale in order for you to legally own it. In order to even hope to get such an approval, you would have to demonstrate an "intent to occupy", meaning you would have to prove you can travel to and occupy the star, planet, moon, asteroid, empty space or whatever else it might be (of course, this is all in assuming the selling entity even has the authorization to sell such properties to begin with). In the best case, the only thing you're buying from these websites is a CHANCE to ATTEMPT ownership, which in reality will never be achieved because no individual can truly demonstrate an "intent to occupy" and no government has ever granted anyone legal ownership of a celestial object.
In the worst (and most likely) case, you're simply being scammed and panhandled out of your money. Other entities that offer "adoption" of celestial objects are often just charity/fund-raising causes that are simply providing a cheap novelty document that has no legal standing in exchange for your financial support.
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.