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Science

Silent3

(15,909 posts)

2. That's "12.91bn light years AWAY", not AGO.

Reply to Judi Lynn (Original post)

Tue Jun 12, 2012, 01:01 PM

Jun 2012

Last edited Tue Jun 12, 2012, 01:33 PM - Edit history (1)

Light years are a unit of distance, not time.

Edit: I see now that the article has a correction at the bottom, stating that the original article did indeed say "ago", but that it was corrected online later.

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'Oldest galaxy' discovered using Hawaii telescope [View all] Judi Lynn Jun 2012 OP

I'm going to have to see the long-form. n/t Bolo Boffin Jun 2012 #1

That's "12.91bn light years AWAY", not AGO. Silent3 Jun 2012 #2

A light year is also a measure of time. sakabatou Jun 2012 #4

Light years relate fairly directly to time... Silent3 Jun 2012 #5

Yes, it's still a mesure of length. sakabatou Jun 2012 #6

We substitute time for distance all the time depending on the context. laconicsax Jun 2012 #7

Yes, but you still know someone screwed up when they say... Silent3 Jun 2012 #8

Ah, but even then, the rationalizations have been made: laconicsax Jun 2012 #9

Wow... galaxies formed pretty early after the Big Bang sakabatou Jun 2012 #3