Thread: Why is it so ??
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Old 08-11-2011, 12:46 AM
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OICURMT
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Update

Fyi


http://www.wired.com/wiredscience/20...ack-hole-disk/
Quote:
Originally Posted by update from Wired

update: Many of the commentors below have wondered how this quasar can be 18.5 billion light-years away when the universe is only 13.5 billion years old (and therefore nothing should be farther than the distance that light would travel in that time, namely 13.5 billion light-years). This is not a mistake. Though nothing traveling in the universe can move faster than light speed, the expansion of the universe itself can happen at any speed (including faster than light). Just one of the mind blowing facts about this strange universe we live in.


In the 13.5 billion years since the big bang, space has expanded so much that the farthest object we can detect are in fact more than 30 billion light years away. You can find out more about the quasar at this link and you can calculate distance to objects at high redshifts using this online calculator.
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