太阳隐藏着的小兄弟威胁着地球
Suns Hidden Twin Stalks Planet Earth
[1] When the end of the world comes, well know what to blame. Scientists have found compelling evidence that the Sun has a baby brother, a dark star whose eccentric orbit is responsible for periodically showering the Earth with comets and meteorites.
[2] The dark starnamed Nemesis by astronomersis thought to be a brown dwarf that spins round the Sun in an orbit so large it is measured in light years, the distance light travels in a year, equivalent to about 6,000 billion miles.
[3] The research suggests that, every 26m years, the stars eccentric orbit brings it within one light year of the solar system. There it causes havoc in the Oort Cloud, a huge region surrounding the solar system that contains billions of bits of cosmic rubble left over from the formation of planets.
[4] Of the millions of rocks it throws out of orbit at each visit, some hurtle Earthwardsand have several times nearly wiped out life on Earth.
[5] Astronomers have long wondered if the Sun has a smaller partner. Recently, two independent groups of researchers have found evidence of one.
太阳隐藏着的小兄弟威胁着地球
[1]当世界末日来临时我们将知道该去责备什么。科学家们已发现明显的迹象表明:太阳有一个小弟弟,它是一颗暗星,其偏心轨道导致彗星群和流星雨周期性降落地球。
[2]这颗被天文学家叫做复仇女神星的暗星被认为是一颗褐矮星,它围绕太阳旋转的轨道大得要用光年计量,光年是光在一年中走过的距离,大约等于6万亿英里。
[3]研究表明,每经过2600万年,这颗星的偏心轨道就将它带到距太阳系1光年的范围内。在那里,它引起了奥尔特云的浩劫,奥尔特云是一个巨大的围绕太阳系的区域,里面包含了数十亿从行星形成中分离出来的宇宙碎块。
[4]它每一次访问太阳系时,都从轨道上甩出上百万个岩块,其中一些飞向地球的方向有几次几乎摧毁地球上的生命。
[5]天文学家长期以来一直怀疑太阳是否有一个小伴星。最近,两个独立的研究小组已经发现了一些端倪。
游戏界高调宣战AI,星际争霸选手下战书了
神奇新APP:给美食拍张照就能看到做法!
国内英语资讯:China stresses role of philosophy and social sciences in developing socialism
国际英语资讯:Former Greek PM Loukas Papademos recovering from terror attack, police on alert
体坛英语资讯:New Zealand Rugby Team wins Princess of Asturias Award for Sport
布鲁塞尔发生抗议北约和川普活动
国内英语资讯:Chinese premier stresses steady economic development, peoples livelihood
国内英语资讯:Political advisors discuss home market regulation
国际英语资讯:Trump asks Supreme Court to block New York subpoena for his tax returns
上百枚里约奥运会奖牌生锈被召回
国内英语资讯:SCO development faces new opportunities, challenges: Chinese FM
国际英语资讯:Six more soldiers, 13 militants killed on 3rd day of clashes in Philippines
超越推特! 新浪微博月活跃用户达3.4亿!
国际英语资讯:British student sentenced to 15 years in prison for planting bomb on London train
体坛英语资讯:Spain s Supreme Court confirms Messi fraud sentence: judicial source
Head trip?
国内英语资讯:Russia, China pledge further cooperation, joint work on intl issues
体坛英语资讯:English Premier League winners Chelsea cancel victory parade
自然解放浪潮来袭 近四分之一女性不再剃除腋毛
扎克伯格辍学12年后终获哈佛学位
国际英语资讯:Algerias presidential election campaign to start on Sunday
国际英语资讯:Lebanese political parties agree on naming new PM
国际英语资讯:Roadside bomb kills 10 civilians in W. Afghanistan: local media
中国成全球稳定开采可燃冰第一国
"Be a chicken"是什么意思?
国际英语资讯:DPRK calls for direct talks in response to Washingtons new proposal
我为什么要努力学习 Why Should I Study Hard
国际英语资讯:Kagame delivers stern warning against those trying to destabilize Rwanda
美国打记者议员候选人胜选后道歉
人工智能遇上交通灯 交通堵塞或成历史
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |