space的英语小报素材-英语手抄报spacetravel内容摘要

Black holes on a collision course

趋于碰撞的黑洞

Scientists say Chandra provides first evidence that two such mysteries can coexist in one galaxy. 科学家说,钱德拉望远镜首次证实两个黑洞可共存于同一

星系

中。

In a very bright galaxy 400 million light-years away, two black holes are drifting toward each other and in millions of years will merge with an eruption of energy and a burst of gravitational waves that could warp the very fabric of space, astronomers said Tuesday. 天文学家本周二说,在一个距地球4亿光年的明亮星系内,两个黑洞正在互相靠近,数百万年后将融为一体,并爆发出大量的能量,由此产生的

引力波

可能会影响到宇宙的每一个角落。

THE SCIENTISTS said the Chandra X-ray Observatory has found the first evidence that two immense black holes can coexist in the same galaxy and that they are moving toward each other for an eventual merger. 《科学家》说,钱德拉

X线

望远镜已经发现初步证据,证明两个巨大的黑洞可以同时存在于同一星系中,它们正在彼此靠拢,最终将合二为一。

The double black holes were found in a bright, highly active galaxy known as NGC6240, about 400 million light-years from the Earth. 这对黑洞存在于一个极其活跃明亮的星系中,该星系被命名为NGC6240,它距地球约有4亿光年。

Astronomers studied NGC6240 because it produced unexplained bursts of X-rays that appeared to come from one of two nuclei at the galactic center. Images collected by radio, infrared and optical observations showed two bright spots, but did not pinpoint the origin of the X-rays. 天文学家之所以研究NGC6240,是因为发现该星系中心有两个核,其中一个不断爆发出难以解释的X线。由无线电、

红外线

和光学观察收集到的影像显示该星系中有两个亮点,但无法准确定位X线的来源。

When Chandra, with its sensitive X-ray detectors, focused on the nuclei, astronomers hoped it would tell them whether either of the two points of activity were black holes. 钱德拉装有敏感的X线检测器,天文学家用它对准这星系的核心,希望确定两个活跃点中是否有一个为黑洞。

"Much to our surprise, we found that both were active black holes," Stefanie Komossa of the

Max Planck

Institute in Germany, said in a statement. 德国Max Planck研究所的Stefanie Komossa在一份申明中说:"我们惊讶地发现它俩都是活跃的黑洞。"

Finding two black holes in one galaxy, said Komossa, "supports the idea that black holes can grow to enormous masses in the centers of galaxies by merging with other black holes." Komossa说,同一星系两洞并存的科学发现证明,星系核心的黑洞可以通过相互兼并融合而发展为宏大的物质。

An artist's conception shows two black holes whirling around each other at the center of a galaxy. 艺术化的构想是:这两个黑洞在星系中心互相围绕对方旋转。

Guenther Hasinger, also of Max Planck, said the Chandra images captured the unmistakable markings of two black holes - high-energy photons swirling around the dense black hole centers and X-rays spewing out from iron atoms being pulled into the center at a high rate of speed. Max Planck的Guenther Hasinger说,钱德拉所摄的影像捕获了可以确定两个黑洞并存的迹象,即在密度甚高的黑洞中心周围涡动着高能量的光子,从铁原子中喷射出的X线被高速吸入黑洞中心。

Komossa and Hasinger are co-authors of a study submitted for publication in the Astrophysical Journal Letters. Hasinger和Komossa曾联名撰文发表在《天文物理学通讯》上。

The two black holes in NGC6240 are now about 3,000 light-years apart and are expected to merge some time in the next few hundred million years, the researchers said. The merger will be accompanied by an eruption of radiation and a burst of gravitational waves that will spread throughout the universe, causing ripples in the fabric of space, the astronomers said. 据研究人员介绍,NGC6240中的两个黑洞目前相距大约3000光年,预计要几亿年后才能彼此融合,届时将会产生大量的辐射和引力波,冲击宇宙各处,造成太空的涟漪。

The gravitational ripples could cause minute changes in the distance between any two points in the universe, they said. 天文学家说,这种引力涟漪会使宇宙中任何两点间的距离发生细微的变化。

In another study, French and Argentine astronomers said that observations by the Hubble Space Telescope and ground-based telescopes have detected a stellar black hole streaking across the

Milky Way

at about 250,000 miles an hour. A companion star is being dragged along and slowly devoured by the black hole, according to scientists at the French Atomic Energy Commission and the Institute for Astronomy and Space Physics in Argentina. 在另一项研究中,法国和

阿根廷

天文学家说,通过哈勃太空望远镜和地面的

天文望远镜

,他们发现一个星球的黑洞正以25万英里的时速穿越

银河系

。据法国原子能委员会和阿根廷天文和空间

物理研究所

的科学家介绍,这个黑洞后还有另一颗星尾随相伴,并正在被黑洞慢慢地蚕食。

The astronomers said the stellar black hole may have been created by an exploding star in the inner disk of the Milky Way. The black hole is 6,000 to 9,000 light years away, the researchers said. A report on the observations appears Tuesday in the journal Astronomy and Astrophysics.

A black hole is a point in space that is so dense with matter that its gravitational field will not let anything - not even light - escape. Stellar black holes, equal to 3.5 to about 15 solar masses, can be formed by the collapse of a single massive star. But galactic black holes, such as those in NGC6240, are much larger, equal perhaps to millions of solar masses, and are usually at the center of Milky Way, home galaxy of the sun and its planets, is thought to have a black hole at its its immense gravitational pull, a black hole can suck in gas, dust and other matter from the surrounding space. Entire stars can be stripped and pulled into the bottomless maw. As it spirals in at near light speeds, matter captured by a black hole heats by millions of degrees and gives out intense radiation in several parts of the spectrum, including X-rays. The orbiting Chandra observatory is able to detect these X-rays and relay the data to Earth for study by astronomers. 黑洞就是太空中的一个点,此点密度甚高,使得任何物质甚至光都无法脱离它的引力。一个巨星的瓦解就足以产生质量相当于3.5至15个太阳的星球黑洞。但星系黑洞如NGC6240中的黑洞要大得多,质量相当于几百万个太阳,通常位于星系的中心。 银河系是太阳及其

九大行星

的家,科学家认为银河系的中心就存在着一个黑洞。靠着强大的引力牵拉,黑洞能吸入来自周围空间的气体、尘埃和其它物质。这个无底洞甚至将整个星球分解后吸入。物质被黑洞捕获后以几近光速的高速被旋转吸入洞中时,它所释放出的热量可高达几百万度,并可发出不同的强烈射线,包括

X射线

。正在轨道上运转的钱德拉望远镜可以检测到这些X射线,并将数据传回地球,供天文学家研究。

NASA's Chandra X-ray Observatory was launched and deployed by the space shuttle Columbia on July 23, 1999.

美国航空航天局

的钱德拉X线望远镜是在1999年7月23日,由

哥伦比亚号

太空飞船搭载发射升空的。

生命的循环

Facing death, Jeff Cross and Lily Cheng had run out of options. But a rare "domino" liver transplant, involving a living donor, gave both a future.

面对死亡,杰夫・

克罗斯

和程莉莉已经没有其他选择了。但是一个罕见的"

多米诺

"式肝脏移植(涉及到一位活人器官捐献者),却给两人带来了新的生机。

Space travel bets on a dream. To design and build a spacecraft for space travel, you need to be able to figure out how big to make it, how heavy it can be, how fast it will have to go, how much fuel it needs and so forth. For that, you need a theory of how objects move in space and how to make the calculations. Over a period of nearly three centuries (from 1600 to 1900), three brilliant men - Johannes Kepler,

Isaac Newton

and Konstantin Tsiolkovsky, who said "the Earth is the cradle of mankind - one cannot remain in the cradle forever", worked out almost all the theories of space flight.

By 1951 space travel plans had become more grandiose. Famed rocket scientist Wernher von Braun predicted that a successful Mars mission could be accomplished with as few as 46 rockets in a round trip that would take three years. In a later interview with TIME, von Braun affirmed, "Man belongs wherever he wants to go - and he'll do plenty well when he gets there."

The space age began in 1957 when the Soviet Union launched Sputnik 1, the world's first man-made satellite. Also in 1957, Sputnik 2 was launched carrying Laika, a dog that was the first animal to orbit the Earth. In 1961,

Yuri Gagarin

became the first person to pilot a spacecraft. In 1963, the United States and the Soviet Union started a race to see who could put a man on the Moon first. In March of 1965, Alexei Leonov of the Soviet Union left his spacecraft to become the first person to walk in space. On July 20, 1969, the United States won when

Neil Armstrong

and

Buzz Aldrin

landed on the Moon's surface. The two superpowers have also put space stations into orbit around the Earth. These space structures serve as both a home and a laboratory for space travelers. The United States created and launched the first reusable manned spacecraft, the

Space Shuttle

, in 1981.

Park

There is a park near my are a lot of beautiful trees,flowers and birds in the many people go to the park to enjoy their like walking or having a picnic in the I like flying a kite with my sisiter there.

我家附近有一个公园。哪里有很多美丽的树、花和小鸟。所以很多人都喜欢到那里去度周末。他们喜欢在公园里散步或是野餐.但是我喜欢和我姐姐在那里放风筝。

Bedroom

I have a small are only a small bed,a small desk and a small chair in the there is a beautiful doll on my blue I do my homework,read books and play games with the doll in my is small,but it gives me much happiness.

我有一间小小的卧室。那里有一张小小的床、小小桌子和一把小小的椅子。而且还有一个漂亮的娃娃在我那张蓝色的小床上。我每天都在房间里写作业,看书和与我的娃娃玩。虽然房间很小,但是他给了我很多欢乐。

My father

My father is a tall and handsome is a policeman. Everyday he comes back home very late,because he must help the doesn't have time to examine my homework and take me to the I like my father,because he is a good policeman.

我的爸爸是一个高大帅气的男人。他是一个警察。他每天都很晚才回家,因为他要帮助其他的人。他没有时间给我检查作业和带我去公园。但是我仍然很喜欢我的爸爸,因为他是一个好警察。

A Fox, just at the time of the vintage, stole into a vine-yard where the ripe sunny Grapes were trellised up on high in most tempting show. He made many a spring and a jump after the luscious prize, but, failing in all his attempts, he muttered as he retreated:"Well what does it matter! The Grapes are sour!"

译文: 正当葡萄熟了的时候,一只狐狸偷偷地溜进了葡萄园。葡萄架上高高地挂着亮晶晶的、熟透了的葡萄,显得十分诱人。他跳了好几跳,蹦了好几蹦,想吃到这甘美的葡萄,但是他的企图全落空了,走开的时候,他自言自语说:"得了!这有什么!这葡萄是酸的。"

词汇: trellised up 用棚架支撑着 in most tempting show 最诱人的样子

A mother's love never changes.

母爱永恒。

An apple a day keeps the doctor away.

一天一苹果,不用请医生。

A new broom sweeps clean.

新官上任三把火。

An eye for an eye and a tooth for a tooth.

以眼还眼,以牙还牙。

An hour in the morning is worth two in the evening.

一日之计在于晨。

An old dog cannot learn new tricks.

老狗学不出新把戏。

An ounce of luck is better than a pound of wisdom.

聪明才智,不如运气。