We were having a conversation where I work about the Fomalhaut pictures, and it occurred to me that I've always known that the farther you look out, the further you're looking into the past.

I'm grabbing my info from Wikipedia. Assuming Fomalhaut is about 25 light years away, is it also safe to assume that we're looking at Fomalhaut 25 years ago?

On that note, the Sloan Great Wall (link), is around one billion light years from Earth. Therefore, many of the objects making up the wall may or may not even be there today.

Does this sound right?

Sorry, misposted here. Should probably be in q/a.