宇宙正在向遠方慢慢消逝。澳大利亞宇宙學(xué)家總結說(shuō),人們所認為的正在推動(dòng)宇宙遠離其固有位置的一股不可見(jiàn)的力量確實(shí)存在。他們的研究是人類(lèi)第一次去探究大爆炸之前(大于大爆炸距今時(shí)間的一半)的宇宙結構。而在那時(shí),宇宙結構內的斥力(也就是所謂的暗能量)已開(kāi)始大于萬(wàn)有引力了。斯威本大學(xué)的克萊斯·布萊克說(shuō)道:以他們四年來(lái)對20多萬(wàn)個(gè)遙遠星系的觀(guān)測結果來(lái)看,這種神秘的力量是宇宙空間自身所有的一種特性。 ''Dark energy is real,'' Dr Blake said. ''It fills the universe.'' 布萊克博士說(shuō):“暗能量是真的,它充斥于宇宙” The possible existence of an all-pervading repulsive force was first revealed in 1998, when two teams, one led by Brian Schmidt of the Australian National University, discovered that the expansion of the universe was speeding up, rather than slowing down as thought. 最早關(guān)于可能存在(有)一種無(wú)所不在的斥力的報道是發(fā)表于1988年。當時(shí)有兩組團隊(其中一組是由澳大利亞國立大學(xué)的布賴(lài)恩施密特所帶領(lǐng)的)發(fā)現宇宙正在加速膨脹,而非人們所想的減速膨脹。 The team of 26 astronomers, co-led by Dr Blake, used the Australian Astronomical Observatory near Coonabarabran in NSW to observe the force's effect on how galaxies were clustered together about 7 billion years ago, more than halfway back to the Big Bang. 通過(guò)利用(NSW)西部新南威爾士的庫南巴拉布蘭附近的澳大利亞天文臺,這只由布萊克博士領(lǐng)導的,擁有26名宇宙學(xué)家的團隊,研究了這種力量對70億年前(大于大爆炸距今時(shí)間的一半)的星系聚集方式的影響。(譯者注,大爆炸發(fā)生于距今150億年前左右) Dr Blake said their results support the idea that dark energy is the ''cosmological constant'' - a repulsive force Albert Einstein proposed almost a century ago to explain why the universe did not collapse on itself. 布萊克博士說(shuō),他們的研究結果支持暗能量是“宇宙常量”的觀(guān)點(diǎn)。而這種觀(guān)點(diǎn)在大約一個(gè)世紀前就被愛(ài)因斯坦(所)提出來(lái)了,用于解釋為什么宇宙不自我塌陷了。 The famous scientist later dismissed the idea as ''his greatest blunder''. But he was right after all, Dr Blake said. ''Einstein remains untoppled.'' 但是這位著(zhù)名的科學(xué)家之后卻把這種觀(guān)點(diǎn)當作“他最大的錯誤”予以摒棄了。不過(guò)他終究還是對的。布萊克博士說(shuō)道:“愛(ài)因斯坦仍是不可推翻的! Dark energy will continue to push galaxies ever faster away until they fade completely from view. It might also result in a ''Big Rip'', as matter is torn apart, atom by atom, Dr Blake said. 暗能量還將繼續更快的把星系推向遠方,直到完全從我們視野中消失。布萊克博士說(shuō),隨著(zhù)宇宙中的物質(zhì)一點(diǎn)一點(diǎn)被拆分,還可能會(huì )導致“大斷裂”的出現。 Two studies, on the distribution of the galaxies and the rate at which clusters formed, are published in the Monthly Notices of the Royal Astronomical Society. 關(guān)于星系分布和星系集群形成速率的兩篇研究論文,發(fā)表于《皇家天文學(xué)會(huì )月報》。 |
咱中國啥時(shí)候也能有這種幾十年如一日專(zhuān)注的人啊 |
人類(lèi)可能看不到那一天了 |
宇宙大爆炸前, 何來(lái)的時(shí)間? |