No stars in the pictures is literally the easiest thing to disprove they pretty much teach you in the first day of photography class. Go outside now and try and take a picture of the stars. You need a tripod and to set the camera to a long exposure. That is the only way to take pictures of the stars. If they did that the astronauts would be blurry,Like when you see a long exposure shot of a road and there are trails of tail lights. A bunch of blurry astronauts pictures, why would anyone want that?