There are quite a few sites out there, such as this one for your Mars question https://en.wikipedia.org/wiki/Mars , that have the answers to your questions. I have found that doing the research myself is the best way to add to my Ken doll collection, I am sure you would find that it will add to your Ken doll collection, too. As to your "another blue planet" being found assertion, I think that they have already found one. There is a problem with that, though. Into your favorite search engine type "how long would it take to get to the nearest star" and hit return. Please let us know your answer. For your research and a correct answer, you will get a "like" from me.