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There are more than a trillion galaxies in the universe.
在宇宙中有超過一兆個銀河。
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And my team discovered an extremely rare one,
我的團隊發現了 一個極度稀有的銀河,
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a galaxy that doesn't look quite like anything observed before.
它看起來和以前 所觀察到的都不太一樣。
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This galaxy is so peculiar,
這個銀河相當獨特,
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that it challenges our theories and our assumptions
獨特到挑戰了我們 關於宇宙如何運作的
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about how the universe works.
理論以及假設。
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The majority of the galaxies are spiral,
大部分的銀河是螺旋形的,
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similar to our own Milky Way.
類似我們自己的銀河。
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We have strong theories about how these common galaxies form and evolve.
對於這些一般的銀河如何形成 和演化,我們有很堅固的理論。
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But we don't understand how rare galaxies form and evolve.
但我們不了解稀有銀河 是如何形式和演化的。
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An especially puzzling rare case is Hoag's Object.
一個特別讓人迷惑的罕見例子, 就是「霍格的天體」。
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It has a very symmetric central body surrounded by a circular outer ring,
它的中央主體非常對稱, 周圍圍繞著一個圓形的外圈,
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with nothing visible connecting them.
看不見主體和外圈之間的連結。
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Hoag-type galaxies are among the rarest types of galaxies currently known.
「霍格的天體」是目前所知的 銀河中,最稀有的類型之一。
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There are fewer than one in 1,000 galaxies.
在一千個銀河中, 只有不到一個是這樣的。
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It's a mystery how the stars in the outer ring are just floating there
外圈的星星是如何 會這麼整齊地浮在那裡,
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in such an orderly manner.
一直都是個謎。
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That's interesting, right?
那很有趣,對吧?
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Hold on.
等等。
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Things are about to get more mysterious.
更神秘的還在後頭。
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The galaxy that my team discovered is even rarer
我的團隊發現的銀河 比它還要更罕見,
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and much more complex than that.
而且更複雜許多。
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You know, sometimes, you search and search for these objects,
你們知道的,有時, 你不斷尋找這些東西,
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and you find nothing.
卻什麼也沒找到。
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But sometimes, it just appears in the background,
但有時,當你沒有在找它時,
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when you are not even looking for it.
它就出現在背景中。
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This system looks very similar to Hoag's Object,
這個星系看起來 很像「霍格的天體」,
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with its central body and circular outer ring.
也有中間的主體和圓形的外圈。
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We got very excited and thought we discovered another Hoag's Object.
我們相當興奮,以為我們 發現了另一個「霍格的天體」。
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But my research showed this is an entirely new galaxy type,
但我的研究顯示, 這是個全新的銀河類型,
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now commonly referred to as "Burçin's Galaxy."
現在普遍被稱為「布奇的銀河」。 (註:布奇是講者的名字)
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(Laughs)
(笑聲)
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(Cheers) (Applause)
(歡呼)(掌聲)
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We will not be visiting this galaxy anytime soon.
我們短期內不可能去造訪這個銀河。
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It is approximately 359 million light years away from Earth.
它距離地球大約 359 百萬光年。
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You may think this is far.
你們可能覺得這距離很遠。
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Well, actually, this is one of the nearby galaxies.
嗯,其實這算是鄰近的銀河之一。
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I study this object in different light --
我用不同的光來研究這個天體——
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in ultraviolet, optical and near-infrared.
用紫外線、光學和近紅外光。
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Small details on our body, like a scar or wrinkles,
我們身體上的小細節, 比如傷疤或皺紋,
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tell the story of our lives.
訴說著我們人生的故事。
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Similarly, a galaxy's structure in different light
同樣的,在不同的光底下 看銀河的結構
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can help us trace back their origin and evolution.
能協助我們追溯回 它們的源頭和演化。
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How do I look for these details?
我們要如何尋找細節?
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I model the bright central body
我針對明亮的中央主體建立模型,
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and remove my model from the image
再從影像中把我的模型剔除,
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to check for any hidden features,
來確認有沒有任何隱藏的特徵,
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because a bright structure in a galaxy may blind our views of faint features,
因為在銀河中明亮的結構可能 會讓我們看不見暗淡的特徵,
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just like using sunglasses when you are blinded by the intense light.
就像強光讓你看不見的時候, 就戴上太陽眼鏡。
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The result was a big surprise.
而結果是個大驚喜。
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This galaxy doesn't just have an outer ring,
這個銀河不只有一個外圈,
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it has an additional, diffused inner ring.
它還有額外、散開的內圈。
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We were having a hard time explaining the origin of the outer ring
對於霍格式的銀河, 我們就已經很難解
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in Hoag-type galaxies.
外圈的來源。
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Now we also need to explain this mysterious second ring.
現在我們也得要解釋 這神秘的第二個圈。
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There is currently no known mechanism
目前沒有任何已知機制
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that can explain the existence of an inner ring in such a peculiar galaxy.
能夠解釋在這麼特殊的銀河中 為何會有一個內圈存在。
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So the discovery of Burçin's Galaxy clearly highlights the gap
所以,在布奇的銀河被發現之後, 也清楚突顯出了我們
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in our knowledge of galaxy evolution.
對於銀河演化的知識有所不足。
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Further research into how this extremely rare galaxy was formed
若能進一步研究這極度 稀有的銀河是如何形成的,
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can provide us with new clues on how the universe works.
我們就能得到一些關於 宇宙如何運作的新線索。
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This discovery tells us that we still have a lot to learn,
這項發現,讓我們知道 我們還有很多要學習的,
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and we should keep looking deeper and deeper in space
且我們應該要在太空中 持續做更深入的探索,
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and keep searching for the unknown.
不斷尋找未知的事物。
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Thank you.
謝謝。
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(Applause)
(掌聲)