The US have telescopes that can view other galaxies, so surely they can view other planets in our solar system very clearly. If they have found earth like planets, which in my opinion is very likely. Would they hide it from us because they are still profiting from the trouble that religion causes. Also do you think that if astronauts learn to many secrets, could there space ship be blown up on the way back down to earth, especially if they are a good representation of humanity and the public, You know a black one and a white and a school teacher so to speak. Governments have always behaved this way and named streets and building after them.