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‎遲暮時分

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‎NETFLIX 紀錄片系列

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‎揭露了地球與宇宙的連結

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‎一顆流星

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‎從太空深處飛來的古老岩石

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‎墜落地球

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‎裡頭蘊含著構成宇宙的化學元素

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‎世世代代

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‎海龜在海洋中漫游

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‎從牠們吃下肚的食物中取得宇宙元素

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‎海龜數億年來皆是如此

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‎每一個新世代

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‎將同樣的星塵回收

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‎用來孕育下一個世代

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‎誕生於大霹靂

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‎鑄造於恆星的心臟

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‎90種化學元素創造了萬物

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‎它們無盡的回收與重組

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‎書寫下宇宙的歷史篇章

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‎現在

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‎由同樣元素組成

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‎一隻隻海龜展開了牠們的新生

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‎也映照出恆星的生命週期

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‎劇名：基本元素

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‎澳洲的大堡礁上

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‎神奇的事情發生了

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‎在沙灘底下，經過50個時日

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‎來自宇宙各方的化學元素

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‎創造了生命

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‎元素相互結合

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‎形成了下一代的綠蠵龜

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‎龜蛋所提供的生命元素已經竭盡

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‎今天

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‎海龜寶寶將嚐到第一口空氣的滋味

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‎當哥哥姊姊爭先恐後爬入海中

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‎海龜小妹

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‎才破土而出

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‎想要長大成年

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‎牠必須游遍海洋，攝取化學元素

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‎這個旅途危險重重

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‎每個轉彎處都暗藏險機

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‎但對海龜寶寶來說

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‎海洋的召喚實在難以抗拒

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‎一窩上百隻幼龜中

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‎有時候只有一隻能存活

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‎有時全數喪生

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‎但儘管有風險

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‎海龜小妹知道，牠必須爬入海中

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‎牠抓準時機

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‎大膽邁步

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‎今天

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‎是牠的幸運日

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‎海龜小妹不停地游

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‎直到礁島遠遠拋在身後

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‎牠安全避開聚集在
‎沿岸淺水區的掠食動物

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‎隱身在廣闊無邊的大海中

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‎過上以原子為食的童年生活

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‎原子

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‎提到它的起源，就得倒轉宇宙的一生

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‎從宇宙初生時開始說起

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‎（大霹靂）

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‎從無到有，僅在一瞬間

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‎我們的宇宙自大霹靂中誕生了

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‎一開始

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‎宇宙只是一團濃密的熱霧

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‎但熱霧持續擴張的同時

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‎它也開始冷卻

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‎接著在你所能想像的最小規模中

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‎驚人的事情開始發生

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‎熱霧中凝聚出第一個原子

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‎氫原子

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‎宇宙中的第一種元素

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‎在大海裡

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‎這正是幼龜在尋找的目標

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‎牠們浮上水面

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‎在礁島的淺水區覓食

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‎這位是史黛拉

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‎成功離開沙灘
‎爬入海中的幸運兒之一

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‎牠已經比剛孵化時重兩千多倍

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‎迅速成長中

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‎漂流在海裡的生物都是牠的食物

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‎但其中一種元素牠攝取的最多

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‎氫

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‎在牠吃下的食物中
‎氫原子佔了超過一半的量

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‎也是所有生物體內含量最豐富的元素

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‎從魚類

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‎到無脊椎動物

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‎海葵和珊瑚

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‎在宇宙誕生之初形成的氫原子

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‎從恆星傳遞給行星

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‎從行星傳遞給動物

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‎再從獵物傳遞給掠食動物

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‎因此對史黛拉來說

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‎珊瑚礁的周遭水域危機四伏

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‎同樣在尋找氫原子的成年虎鯊

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‎一生都在獵食海龜

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‎史黛拉的主要防具是牠可靠的盔甲

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‎由鈣和磷強化的骨骼構造

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‎這兩個元素可以往回追溯…

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‎到宇宙生命的另一個關鍵時刻

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‎（135億年前）

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‎大霹靂後的三億年間

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‎宇宙中沒有行星或恆星

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‎是宇宙的黑暗時代

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‎幽暗之中

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‎捲成鬚狀的氫原子在宇宙中縱橫交錯

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‎接著，不可思議地

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‎重力將它們不斷聚攏

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‎第一顆恆星從中誕生

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‎這是宇宙的黎明

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‎這一刻，有了光明

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‎在這些初代恆星的內部深處

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‎開始發生奇妙的作用

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‎內部溫度與壓力極高

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‎導致新的元素被創造出來

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‎氫原子被迫結合，形成氦原子

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‎氫原子的融合釋放出能量

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‎帶來連鎖反應，製造出更重的元素

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‎包括創造生命的必要元素

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‎三個氦原子結合形成碳

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‎所有生命的基礎

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‎碳和氦結合形成氧

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‎我們呼吸的空氣

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‎氧原子結合形成磷

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‎接著是矽和鈣

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‎構成所有生物的元素

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‎都在初代恆星的核心中創造出來

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‎對史黛拉來說

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‎有些元素至關重要

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‎牠必須長途跋涉去尋覓

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‎（托列斯海峽，離家300公里）

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‎澳洲和巴布亞新幾內亞之間
‎有個溫暖的淺水區

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‎那裡是生機勃勃的海草天堂

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‎海洋中的大草原

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‎史黛拉大老遠游來這裡

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‎以取得海草中的神奇成分

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‎海草生長時

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‎會吸收從外太空沉落到海底的元素

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‎疾速生長的新芽葉富含鈣和磷

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‎為史黛拉提供牠所需的礦物質

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‎用來打造、保養牠的保護殼

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‎強化牠的盔甲

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‎以面對前方的試煉

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‎史黛拉的青春年華

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‎都將在大海中徘徊

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‎尋找誕生於恆星的原子

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‎牠走向成年的旅程

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‎與我們宇宙的故事相仿

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‎因為在大霹靂發生的30億年後

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‎宇宙也邁入成年期

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‎它進入恆星形成相當活躍的階段

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‎（108億年前）

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‎恆星一面成長

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‎一面受引力吸引，聚集成巨大的星系

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‎像是我們的銀河系

156
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‎在這些星系中

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‎每顆恆星所產生的化學元素

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‎都一一轉變成行星和衛星

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‎數十億年後

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‎這些化學元素便慢慢長成
‎我們今日所知的地球

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‎（萬那杜，離家兩千公里）

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‎史黛拉現在完全長大了

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‎身長一公尺多

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‎牠有厚實的甲殼，覆蓋著海藻

165
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‎是漫游珊瑚礁的理想偽裝

166
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‎牠現在與海洋合而為一

167
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‎來自恆星的原子

168
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‎完全演化成海洋生物

169
00:22:11,043 --> 00:22:13,163
‎這僅是地球生物的一個例子

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‎由宇宙精心塑造而成

171
00:22:35,763 --> 00:22:39,043
‎史黛拉已經準備好
‎進入生命的下一個階段

172
00:22:43,723 --> 00:22:47,043
‎因為牠快要當媽媽了

173
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‎牠體內

174
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‎孕育著100顆蛋

175
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‎這是牠這生中第一次懷孕

176
00:23:03,723 --> 00:23:07,683
‎是牠載於自己體內的珍貴星塵

177
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‎在整個珊瑚礁中

178
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‎原子都被組成新的生命

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‎創造出地球上最豐富的生態系

180
00:23:35,963 --> 00:23:37,683
‎但我們的星球

181
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‎是異數

182
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‎在太陽系的其他地方

183
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‎同樣的元素

184
00:23:49,283 --> 00:23:54,043
‎創造出來的世界卻完全不適合生命

185
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‎（水星）

186
00:23:59,963 --> 00:24:05,043
‎最靠近太陽的水星，碳含量豐富

187
00:24:07,923 --> 00:24:09,723
‎但這些碳無法創造生命

188
00:24:10,243 --> 00:24:11,523
‎（攝氏430度）

189
00:24:11,603 --> 00:24:13,843
‎而是烤成焦焦的一片

190
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‎這是個被星光烤焦的世界

191
00:24:22,563 --> 00:24:26,483
‎而在太陽系最遙遠的地方

192
00:24:26,563 --> 00:24:28,603
‎海王星的冰寒溫度

193
00:24:29,523 --> 00:24:33,563
‎導致碳和氫形成甲烷雲

194
00:24:36,723 --> 00:24:40,923
‎這令人窒息的氣體
‎讓海王星呈現出絢麗的藍色

195
00:24:46,683 --> 00:24:48,003
‎甚至火星

196
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‎雖然它與地球擁有相同成分

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‎卻缺乏富含氧氣的大氣層

198
00:24:57,563 --> 00:25:00,923
‎因此複雜的生命在這裡無法生存

199
00:25:07,843 --> 00:25:12,123
‎只有地球擁有剛好的條件

200
00:25:18,363 --> 00:25:19,363
‎但就連在這裡

201
00:25:20,163 --> 00:25:22,323
‎元素的爭奪戰也很激烈

202
00:25:24,243 --> 00:25:25,083
‎而且危機…

203
00:25:27,603 --> 00:25:29,083
‎永遠近在咫尺

204
00:25:44,923 --> 00:25:48,443
‎幸好，史黛拉已經變成捉迷藏達人

205
00:26:29,963 --> 00:26:31,443
‎史黛拉暫時很安全

206
00:26:34,363 --> 00:26:37,363
‎但牠即將面臨生命中最大的挑戰

207
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‎返回大堡礁

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00:26:43,963 --> 00:26:45,643
‎以及牠出生的島上

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00:26:49,523 --> 00:26:51,923
‎將牠的蛋產入沙灘中

210
00:26:58,923 --> 00:27:01,483
‎但牠在海洋中遊走了一生

211
00:27:02,243 --> 00:27:05,643
‎意味著牠現在離家兩千公里遠

212
00:27:09,883 --> 00:27:11,563
‎史黛拉導航回鄉的能力

213
00:27:12,203 --> 00:27:14,803
‎是自然界的奇蹟之一

214
00:27:21,443 --> 00:27:22,803
‎在地球深處

215
00:27:23,643 --> 00:27:26,643
‎我們星球的核心產生一個磁場

216
00:27:28,883 --> 00:27:33,923
‎讓地球表面各處
‎都具有其獨特的地磁特徵

217
00:27:37,603 --> 00:27:39,163
‎當牠孵化時

218
00:27:39,243 --> 00:27:43,563
‎島上的特徵就烙印在史黛拉的腦中

219
00:27:46,243 --> 00:27:48,243
‎為了找到歸途

220
00:27:48,323 --> 00:27:51,643
‎牠會仰賴另一種化學元素

221
00:27:53,803 --> 00:27:56,923
‎把牠和地球核心連結起來的元素

222
00:28:00,443 --> 00:28:05,123
‎只有在恆星死去時才會產生的元素

223
00:28:10,723 --> 00:28:12,763
‎在銀河系臨近之處

224
00:28:13,763 --> 00:28:15,723
‎250萬年前

225
00:28:16,763 --> 00:28:20,563
‎一顆巨大恆星的核心發生了劇烈變化

226
00:28:25,323 --> 00:28:29,403
‎它終其一生都是靠核融合來驅動

227
00:28:35,923 --> 00:28:37,243
‎釋放出的能量

228
00:28:39,083 --> 00:28:41,483
‎創造出越來越重的元素

229
00:28:45,243 --> 00:28:47,803
‎直到核心變得炙熱無比

230
00:28:48,683 --> 00:28:49,923
‎恆星開始創造

231
00:28:51,683 --> 00:28:52,523
‎鐵

232
00:28:55,403 --> 00:28:58,243
‎這導致了根本性的變化

233
00:29:03,123 --> 00:29:06,083
‎因為創造鐵並不會釋放能量

234
00:29:07,963 --> 00:29:09,203
‎而是會消耗能量

235
00:29:15,923 --> 00:29:18,403
‎當越來越多的鐵製造出來

236
00:29:19,283 --> 00:29:22,803
‎它像傳染病般在核心蔓延

237
00:29:27,203 --> 00:29:29,203
‎吸收恆星的熱量

238
00:29:33,923 --> 00:29:34,923
‎掐住它的頸項

239
00:29:46,323 --> 00:29:48,603
‎一旦沒有熱源可以維持動力

240
00:29:52,883 --> 00:29:54,443
‎從這一刻起

241
00:29:57,523 --> 00:29:59,723
‎恆星就注定滅亡

242
00:30:11,643 --> 00:30:16,243
‎最終的大爆炸散發的亮度
‎可媲美100億個太陽

243
00:30:22,043 --> 00:30:27,123
‎這顆超新星將富含鐵的塵埃
‎推送到銀河系各處

244
00:30:35,163 --> 00:30:38,163
‎一路來到我們的星球

245
00:30:43,203 --> 00:30:44,323
‎就連現在

246
00:30:45,323 --> 00:30:50,323
‎每天都會有100噸的星塵
‎穿過地球的大氣層

247
00:30:53,123 --> 00:30:56,843
‎有些是太陽系形成過程中留下的

248
00:31:00,643 --> 00:31:04,523
‎有些是從遙遠的超新星吹過來的

249
00:31:08,443 --> 00:31:13,643
‎我們的星球和恆星之間的直接連結

250
00:31:19,723 --> 00:31:22,003
‎正是塵埃中的鐵

251
00:31:22,563 --> 00:31:25,443
‎讓史黛拉找到回家的路

252
00:31:33,563 --> 00:31:35,243
‎因為在牠的大腦深處

253
00:31:38,323 --> 00:31:43,643
‎某些特化細胞含有磁鐵礦晶體

254
00:31:44,563 --> 00:31:48,803
‎這種含鐵豐富的礦物質
‎能和地球磁場對齊

255
00:31:52,803 --> 00:31:53,723
‎像個羅盤

256
00:31:55,603 --> 00:31:57,723
‎為牠指引正確的方向

257
00:32:05,483 --> 00:32:11,723
‎讓史黛拉找到家鄉獨有的磁力指紋

258
00:32:19,523 --> 00:32:22,723
‎於是，由超新星鑄造出來的元素

259
00:32:30,403 --> 00:32:34,323
‎將引導牠穿越好幾公里
‎景色單一的海洋

260
00:32:48,643 --> 00:32:49,963
‎回到礁島上

261
00:32:53,843 --> 00:32:55,523
‎牠的出生地

262
00:33:08,163 --> 00:33:12,083
‎可是，其他生物也具有地磁導航能力

263
00:33:14,723 --> 00:33:16,523
‎像是虎鯊就有

264
00:33:19,643 --> 00:33:22,323
‎地磁帶牠們洄游到同一個礁島

265
00:33:26,603 --> 00:33:28,963
‎因為每年有幾個月

266
00:33:29,043 --> 00:33:32,643
‎數以千計的母龜會來這裡產卵

267
00:33:34,643 --> 00:33:37,923
‎這是地球上最盛大的綠蠵龜聚會

268
00:33:38,003 --> 00:33:40,003
‎其他地方都看不到

269
00:33:45,643 --> 00:33:47,363
‎當牠們抵達岸邊

270
00:33:49,123 --> 00:33:50,363
‎進食秀便開始了

271
00:34:03,843 --> 00:34:06,203
‎史黛拉必須等待適當時機

272
00:34:08,883 --> 00:34:10,083
‎尋找破口

273
00:34:12,203 --> 00:34:14,123
‎以避免遭襲

274
00:34:32,123 --> 00:34:33,843
‎等危險過去後

275
00:34:37,483 --> 00:34:39,123
‎牠才終於游上岸

276
00:34:52,323 --> 00:34:53,923
‎經歷了一場浩蕩旅程

277
00:34:57,123 --> 00:34:59,283
‎史黛拉爬上沙灘

278
00:35:00,883 --> 00:35:03,363
‎牠孵化的地方

279
00:35:28,083 --> 00:35:30,963
‎牠用盡一生收集而來的元素

280
00:35:36,643 --> 00:35:39,203
‎如今平平安安產在沙坑中

281
00:35:45,283 --> 00:35:47,003
‎史黛拉的任務完成了

282
00:35:47,563 --> 00:35:49,283
‎於是牠回到大海

283
00:35:52,923 --> 00:35:56,643
‎再次開始收集星塵

284
00:36:00,523 --> 00:36:01,843
‎牠生命的週期

285
00:36:03,683 --> 00:36:06,563
‎呼應了宇宙中最宏偉的週期

286
00:36:08,483 --> 00:36:11,963
‎恆星的生與死

287
00:36:22,523 --> 00:36:25,643
‎因為遠在銀河系的另一端

288
00:36:27,043 --> 00:36:30,843
‎無數個超新星的餘燼如今匯聚

289
00:36:30,923 --> 00:36:32,243
‎（獵戶座大星雲）

290
00:36:32,323 --> 00:36:34,523
‎形成一個巨大的星雲

291
00:36:41,323 --> 00:36:44,523
‎跨越了數十光年的一團星塵

292
00:36:48,163 --> 00:36:52,643
‎在這團星雲中，是下一代的恆星

293
00:36:53,883 --> 00:36:55,323
‎即將開始形成之處

294
00:37:06,843 --> 00:37:08,443
‎名叫原行星盤

295
00:37:10,443 --> 00:37:12,923
‎它們就像巨型的宇宙蛋

296
00:37:15,043 --> 00:37:17,723
‎每一顆都比我們的太陽系大

297
00:37:23,763 --> 00:37:26,683
‎在牠們由電離氣體構成的蛋殼中

298
00:37:28,603 --> 00:37:31,523
‎引力開始將星塵吸引在一塊

299
00:37:38,923 --> 00:37:42,443
‎同時，史黛拉蛋中的星塵

300
00:37:45,483 --> 00:37:47,603
‎也開始慢慢成形

301
00:37:56,243 --> 00:38:01,843
‎牠收集而來的元素逐漸轉變

302
00:38:08,323 --> 00:38:11,843
‎形狀開始有了幼小生物的模樣

303
00:38:24,323 --> 00:38:25,683
‎在原行星盤中

304
00:38:27,883 --> 00:38:30,283
‎氫、氦等氣體

305
00:38:33,163 --> 00:38:35,723
‎也正在餵養一顆胚胎期的恆星

306
00:38:44,923 --> 00:38:46,723
‎蛋中原先的胚胎

307
00:38:49,123 --> 00:38:51,123
‎如今長成了一隻龜寶寶

308
00:38:55,243 --> 00:38:58,923
‎有殼，有鰭肢，還有嘴喙

309
00:39:02,923 --> 00:39:04,723
‎這些元素重新塑造

310
00:39:08,123 --> 00:39:10,323
‎蛻變為海洋生物

311
00:39:15,203 --> 00:39:16,163
‎在原行星盤中

312
00:39:17,043 --> 00:39:20,243
‎新生恆星也即將發育完成

313
00:39:21,523 --> 00:39:24,843
‎從前一世代的餘燼中重生

314
00:39:26,163 --> 00:39:27,483
‎它的光芒照亮了

315
00:39:27,563 --> 00:39:30,043
‎在軌道上一一成長的行星家族

316
00:39:34,243 --> 00:39:35,363
‎新的世界

317
00:39:36,283 --> 00:39:40,323
‎也有可能是新的生命家園

318
00:39:48,323 --> 00:39:49,963
‎在沙坑底下

319
00:39:51,283 --> 00:39:52,803
‎同樣的星塵

320
00:39:54,123 --> 00:39:58,843
‎傳承自無數個恆星與海龜世代

321
00:40:00,923 --> 00:40:03,243
‎將展開另一段旅程

322
00:40:08,203 --> 00:40:09,603
‎每一個新生命

323
00:40:11,123 --> 00:40:15,443
‎都與宇宙的起源一脈相承

324
00:40:20,883 --> 00:40:26,243
‎每一個新故事
‎都始於上一個故事的結束

325
00:40:34,923 --> 00:40:38,923
‎於是，《我們的浩瀚宇宙》下集待續

326
00:40:40,803 --> 00:40:43,043
‎主題是地球最珍貴的資源

327
00:40:46,323 --> 00:40:47,163
‎水

328
00:40:48,963 --> 00:40:52,843
‎一個大象家族將踏上危險的尋水之旅

329
00:40:57,043 --> 00:40:59,403
‎牠們的旅途，每分每秒都很精彩

330
00:41:01,723 --> 00:41:04,843
‎正如水的旅途，跨越廣袤的太空

331
00:41:04,923 --> 00:41:06,483
‎來到我們的星球

332
00:41:10,683 --> 00:41:13,883
‎但為什麼地球是太陽系中

333
00:41:14,363 --> 00:41:17,283
‎唯一表面被水覆蓋的世界？

334
00:41:18,643 --> 00:41:22,003
‎為什麼水對生命來說如此重要？

335
00:42:06,843 --> 00:42:11,203
‎字幕翻譯：顏志翔