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哈佛天体物理学家说,新的Oumuamua研究所并不排除它的外星性质

  Last week,a new paper in Nature Astronomy on the origins of Oumuamua–the enigmatic cigar-shaped object that shot through our solar system in 2017,suggested that although that it did not seem to have been created by intelligence design,the object may in fact be transporting the building blocks of life from across the universe.

  上周,在《自然天文学》杂志上发表的一篇关于Oumuamua的起源的新论文——这是一个神秘的雪茄形状的物体,于2017年在我们的太阳系中被射出。改论文指出,尽管它看起来并不是由智能设计创造的,但事实上,这个物体可能正在从整个宇宙运输生命的组成部分。

  The new study on Oumuamua by astronomers Yun Zhang and Douglas N C Lin does not rule out the hyperbolic asteroid's alien nature,Harvard astrophysics and cosmologist Dr.Abraham'Avi'Loeb suggests.

  哈弗大学天体物理学家和宇宙学家Abraham'Avi'Loeb博士认为,天文学家张云和林道格拉斯对欧木村的最新研究并不排除双曲线小行星的外星性质。

  “This new paper leaves open the possibility of an artificial origin for Oumuamua because it cannot account for the required abundance of such objects by requiring a production region so compact around their parent star,”Loeb said,speaking to Express,when asked to comment on the paper.

  勒布在被人问及对这篇论文的评论时说:“这篇新的论文为Oumuamua留下了人为起源的可能性,因为它不能通过要求母星周围的生产区域如此紧密来解释这类天体所需的丰度。”

  In their study,Zhang and Lin carried out simulations and thermal modeling of Oumuamua,suggesting that the space rock was really a wedge-shaped piece of a dwarf planet that was smashed apart by the powerful gravitational forces of a distant star,which may have torn it into elongated fragments that were subsequently released into interstellar space.

  在他们的研究中,张和林对欧木村进行了模拟和热模拟,表明这颗太空岩石实际上是一颗矮行星的楔形碎片,被一颗遥远恒星的强大吸引力粉碎,它可能已经撕裂成细长的碎片,随后被释放到星际空间。

  At the same time,the scientists left open the exciting possibility that elements buried within the fragment's surface,such as ice,could still be trapped within the asteroid.What's more,Zhang and Lin don't discount the possibility that a space shard like the Oumuamua could pick up life-sustaining matter as it zips across the universe,and that it could one day plant this matter within a planet,perhaps giving rise to new life.
纽约时报中英文网 www.qqenglish.com


  同时,科学家们还提出了一种令人兴奋的可能性,即埋在碎片表面的元素,如冰,仍有可能被困在小行星中。更重要的是,张和林并没有忽视这样一种可能性,即像欧木村这样的太空碎片可以在宇宙中快速移动的时候收集到维持生命的物质,并有一天它可以将这种物质植入一个行星中,也许会产生新的生命。

  However,Dr.Loeb insists that it's too early to rule out the asteroid's alien nature,given that it“exhibits many weird and unexpected properties that do not admit a simple natural explanation.”These properties,he says,have not been accounted for by the new research.“We should still keep an open mind about Oumuamua's origins,he urged.

  然而,勒布博士坚持认为,现在排除小行星的外星性质还为时过早,因为它“表现出许多奇怪和出乎意料的特征,不承认一个简单的自然解释”。他说,这些特征还没有被新的研究所解释。“我们仍然应该对Oumuamua的起源保持开放的心态,”他敦促道。

  潮汐干扰天体丰度低

  Furthermore,the Harvard astronomer said he was not entirely convinced by Zhang and Lin's conclusions,owing to the“low abundance of tidally disrupted objects.”

  此外,这位哈佛天文学家表示,由于“潮汐干扰天体丰度低”,他并不完全相信张和林的结论。

  “To account for Oumuamua as a member of a population of interstellar objects on random orbits,one needs each star to produce roughly a quadrillion(a thousand trillion)such objects,totaling roughly an Earth mass of rocky material per star.It is very unlikely that tidal disruption events will produce so many Oumuamua-like objects because these are rare events restricted to the region near a star,which is tens of millions of times smaller than the size of the planetary system around it,”he explained.
纽约时报中英文网 http://www.qqenglish.com/


  “要把Oumuamua算作随机轨道上的星际天体群的译员,我们需要没课恒星产生大约一万亿(1000万亿)这样的天体,每颗恒星的岩石物质地质质量大致相当。潮汐扰动时间不太可能产生如此多类似Oumuamua的天体,因为这些都是罕见的事件,仅限于恒星附近的区域,这一区域比其周围行星系统的大小小上千万倍,”他解释说。

  Oumuamua朝着太阳系的边缘飞奔

  This illustration shows‘Oumuamua racing toward the outskirts of our solar system.As the complex rotation of the object makes it difficult to determine the exact shape,there are many models of what it could look like.

  这幅图显示的是“Oumuamua朝着太阳系的边缘飞奔”。由于物体的复杂旋转使得精确的形状很难确定,所以有很多模型可以描述它的样子。

  Loeb proposed the exciting theory that Oumuamua may in fact be an alien-designed carrier vessel in 2018,citing its apparent mysterious ability to change speed,a property that was observed as the asteroid transited our solar system.Together with his colleague Dr.Shmuel Bialy,Loeb suggested that this property could be an indication that the asteroid is equipped with a light sail-a propulsion technology dependent on radiation pressure,making it unlikely for it to have natural origins.

  勒布在2018年提出了令人兴奋的理论,即Oumuamua实际上可能是一艘由外星人设计的运载飞船,理由是它明显具有改变速度的神秘能力,这一特性是在小行星穿越我们太阳系时观测到的。勒布和他的同事Shmuel Bialy博士一起提出,这一性质可能表明这颗小行星具备了一个光帆——一种依赖于辐射压力的推进技术,使得它不太可能有自然起源。

  In any event,Dr.Loeb stresses that humanity faces immense risks–both natural catastrophes and man-made disasters,by putting all its“eggs…in one basket”on Earth and failing to do more to branch out into the stars.At the very least,he believes,humanity should send out information about who we are and what we care about as a species into the solar system.This,he says,“would be as precious as the development of Gutenberg's printing press was for preserving copies of the Bible”was in its own time.

  无论如何,勒布博士强调说,人类面临巨大的风险,包括自然灾害和人为灾害,把所有的“鸡蛋...放在一个篮子里”放在地球上而没有做更多的事情去扩展到恒星。他认为,至少人类应该向太阳系发送有关我们是谁以及我们作为一个物种所关心的事情的信息。他说,“这将和骨疼被个印刷机的发展是为了保存圣经的副本一样珍贵”。
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