Old Sen's Tales IT Help

An event by Chunghwa Telecom，Every 10,000 clicks，Chunghwa Telecom will help a school become a partner of the 'Jane Goodall Institute'，To cultivate more native plants。

This is an amazing topic I came across by chance!

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10Billion light-years，What kind of concept is this?

    Light-year，The distance light travels in one year。Speed of light! It's recognized as the ultimate speed limit，299,792,458 meters per second，In the blink of an eye, it can circle the Earth seven and a half times。See it?，That's how fast light is，Let it run，Let it run for a year，所度 量出來的距離就是一光年了。現在各位把滑鼠移到螢幕的左下角，點“開始”－“程式集”－“附屬應用程式”－“小算盤”，都來動手算算它，這一年是 31536000秒，一秒跑299792458米，乘出來就9454254955488000米，約等於十萬億公里吧。你說什麼，簡直天文數字？廢話，天 文上的數位當然得是天文數字啦～～～～～但這也僅僅只不過是一光年的長度。

    當我們看到十億光年以外的星星時，映入我們眼簾的那束星光已經在茫茫宇宙間飛奔了十億年。換句話說，What we are seeing now is just what it looked like a billion years ago! To know what it is like now, we would have to wait another billion years...

    It is generally believed that the universe is 15 billion years old。So the maximum observable diameter of the universe is likely only around 15 billion light-years。150億光年遠的地方的光被我們看到時已經在宇宙間穿越了150億年，那是宇宙誕生時的影像！！！

下面這張圖是在10億光年這樣的數量級下觀測宇宙，上面的每一個象素點所表現的事物都是無比古遠的。