<p>Yes, you are correct. Since Alpha Centauri is four light years away, you see it as it was four years ago. For example, if the sun was to suddenly disappear it would take eight minutes for us to see it disappear. The reason is that light takes eight minutes to travel from the sun to us. Also, the Moon is nearly one light second away, so were are looking at as it was one second ago.</p>

CC BY-SA 3.0
2017-03-16T14:47:32.360Z
2017-03-16T14:47:32.360Z
StellarExile
<p>I just wanted to know if what we can only see out-side of our planet is just the past of other objects?</p>

<p>If 1 Light Year is equals to 365.25 Days, then I saw an object outside our planet that is 1 Light Year away from us, does it means I just saw its past 365.25 days ago?</p>

<space-time>
Does Light Year is their past?
Onel Sarmiento
# Does Light Year is their past?

(Asked by: username_0 on 2017-03-16)

I just wanted to know if what we can only see out-side of our planet is just the past of other objects?

If 1 Light Year is equals to 365.25 Days, then I saw an object outside our planet that is 1 Light Year away from us, does it means I just saw its past 365.25 days ago?

**Tags:** space-time


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## 1 answers

### Answer by username_1 on 2017-03-16. Score: 1

Yes, you are correct. Since Alpha Centauri is four light years away, you see it as it was four years ago. For example, if the sun was to suddenly disappear it would take eight minutes for us to see it disappear. The reason is that light takes eight minutes to travel from the sun to us. Also, the Moon is nearly one light second away, so were are looking at as it was one second ago.


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