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Author Topic: Can we see the past or future by looking in different directions in space?  (Read 2108 times)

Offline callingtotheoutside

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If everything is expanding since the big bang, with older stuff moving ahead of us and younger stuff behind us then is it possible to stargaze at certain times of the year and be looking into the past or future? Obviously I'm aware that you would need a really powerful telescope to see those kind of distances but i was just curious if whilst I'm doing a bit of stargazing e.g. during the summer and in England i could think to myself "Wow, that's the direction the big bang started" or am i completely barking up the wrong tree?  ???     
« Last Edit: 06/03/2009 08:06:04 by chris »


 

Offline Vern

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I think that in every direction you look you will be looking into the past. There is not a certain direction that is younger; distance should be younger; no matter the direction.
 

Offline callingtotheoutside

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Now i'm just confused  :(
 

Offline Don_1

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Whenever you look at the stars, you are effectively looking into the past, regardless of where that star is in relation to Earth and the point of the Big Bang. If the light from a star (the Sun) takes 8 mins to get to Earth, you are seeing that star as it was 8 mins ago, if it takes 8.6 years (The Dog Star) then you are seeing the star as it was 8.6 years ago, not as it is now.
 

Offline Madidus_Scientia

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I think what Vern meant is that everything is the same age, so no matter where you look you're looking at the past because the light you are receiving from the object you are looking at took a long time to get to you.

edit: sorry, Don kinda said the same thing while I was typing my reply out
 

Offline callingtotheoutside

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OK, now i get it thank you. I'm more of a biologist than an astronomer  ;)
 

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