Hi! my question is, if space expand, how come the stars (and planets) don't? they are part of the space and not "sitting inside" or somthing like that. meaning, the earth should grown bigger all the time. you can think about marking a dot on a bloon, as you blow air inside the bloon starts to swell and the dot GETTING BIGGER AS WELL. a related question, that might be answered by answering the last one, is if a star '90 light years' (random) away from earth send it's light rays toward us, and the space is spanding, then the conclusion is - by the time that light get to us, the planet will be maybe 150 light years away! i need clarification thanks!