Hi, I read in a book by M. Kaku: "To describe the universe, cosmologists sometimes use the example of looking down from the top of the Empire State Building, which soars more than a hundred floors above Manhattan. As you look down from the top, you can barely see the street level. If the base of the Empire State Building represents the big bang, then, looking down from the top, the distant galaxies would be located on the tenth floor. The distant quasars seen by Earth telescopes would be on the seventh floor. The cosmic background measured by the WMAP satellite would be just half an inch above the street." I am confused by one thing: If the light of big bang reached here now, how come we came so far before light arrived here as even our galaxy originated from big bang? Please explain. Thank you.