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	Q&A: Cosmology
                        
                    
            Q:
               I read that "the light from some of the quasars Chandra will
               observe has been traveling through space for over 14 billion
               years." Is there something here that will relay us information
               from beyond at a rate faster than the speed of light? If the
               universe is expanding, we will have trouble catching up to what
               has a 14 billion year head start at those speeds?
               
               A:
               Alas, we will never catch up. Sounds like work, doesn't it?
               Information cannot be transmitted faster than the speed of
               light, so we must resign ourselves to being out of date! The
               good news is that we can see into our past. The light from
               distant galaxies tells us what they were like long ago, when the
               universe was young, and everything was much closer
               together.
               
               
               
               
   
        



