Did you know that it's possible to see things the way they were in the past? It is - but the only things you can see that way (as far as I know) are stars.
Because some of the stars we see are so far away, even light takes a long time to travel from there to here. Sometimes it takes up to thousands of years! (See this article on how we see if you don't remember - otherwise this post would seem confusing and unrealistic: http://www1.curriculum.edu.au/sciencepd/readings/ligh_how.htm#1) So that means that the stars we see are actually the way they looked a long time ago.
Amazing, huh?
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