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This is inadvertently saw a very exciting topic!

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10Billion light years，What is a concept?

    光年，Distance light travels in a year。The speed of light! It is recognized as the speed limit，299,792,458 meters per second，Can be halfway around the world seven times in the blink of an eye。What to see，Light on so fast，Let him run!，Run a year，The amount of a light-year is the distance out of the。Now you move the mouse to the lower left corner of the screen，Point "Start" - "Programs" - "Subsidiary app" - "small thinking"，Have to calculate it Yourself，This year was 31,536,000 seconds，One second run 299,792,458 meters，Take out on 9,454,254,955,488,000 meters，It is approximately equal to ten trillion kilometers。what did you say，Simply astronomical? Nonsense，Digital on astronomy course was astronomical friends ~~~~~ but this is only just one light year length。

    When we see stars billions of light years beyond，Catches our eye beam of starlight has been flying in the eternal universe billions of years。in other words，We now see is just the way it is billions of years before! Now it how we only have to wait to see billions of years ......

    Generally considered the birth of the universe 15 billion years now。Therefore, the diameter of the widest space, we might only be observed in the 15 billion light-years this range。150Light billion light-years away is when we have seen across the universe 15 billion years，That was the birth of the universe images! ! !

This figure is below the observable universe at 10 billion light years of such magnitude，Things each pixel point above the performance of the very old are far。