Molecular clouds play an integral role in the prestellar evolutionary sequence of interstellar matter

分子云在星际物质的星前期演化序列中起着不可缺少的作用。

Stars condense from the matter scattered thinly through interstellar space.

恒星是疏散在星际空间的物质凝聚而成的。

Stars condense from the matter scattered thinly through interstellar space

恒星是由疏散在星际空间的物质凝聚而成的。

Stars are born from a kind of primal soup known as the interstellar medium

恒星是由一种称为星际介质的“原汤”形成的。

fluorescent destruction occurs about once for every ten interstellar ultraviolet photons absorbed

每吸收十个星际紫外光子,就会发生一次荧光破坏过程。

The concentrations of interstellar gas can now be mapped with much great accuracy than would ever be possible using visible light

如今,可以画出比用可见光更精确的星际气体聚集图。

The paramount task here facing observational astronomy is to study real interstellar clouds.

实测天文学在这里所面临的头等任务是研究实际的星际云。

He initiated students into the mysteries of interstellar communication.

他将星际通讯的奥秘教给学生。

Collapsing interstellar cloud reverses its gravitational infall and expands outward into the relatively quiescent interstellar environment

坍缩的星际云克服向内的引力而向外膨胀到较宁静的星际环境中去。

The chemistry of stars and interstellar space.

天体化学关于星和星际空间的化学

Astronomers usually assume that interstellar dust is closely confined to the galactic plane

天文学家通常认为,恒星际星尘都是紧靠着银河平面的。

Our assertion that the interstellar gas is definitely no vacuum would seem all the more paradoxical!

我们坚持星际气体决非真空的主张看来愈发荒谬可笑了!

We consider the macroscopic thermal properties of the gas throughout the interstellar region ionized by an exciting star or group of stars

我们将考察被一颗或一群激发星电离的星际区域中各种气体的宏观热力学性质。

interstellar matter

星际的物质.

interstellar molecular radio spectral lines

星际分子射电谱线

interstellar aeronautics

星际航行.

interstellar communications

星际交通(通讯).

interstellar space

星际空间.

Interstellar travel is a remote possibility.

星际旅行是一种遥远的可能。

The real problem of interstellar communication does not concern technology

星际通信的实际问题不在于技术。

Because they are rearranging the interstellar matter that is the raw material for further star formation, they may affect the rate of star formation in a galaxy

星群爆发意味着重组星际物质,而这些星际物质恰恰是新星形成的原料,因此,星群爆发可能影响星系中新星形成的速度。

The temperature of the nebula in some places may never have risen high enough to evaporate pre-existing micron-sized interstellar grains

星云中某些地方的温度可能从未升高到足以使原有的微米级大小的星际尘埃变成气体。

Once the existence of this wavelength had been discovered, it was not long before its use as the uniquely recognizable broadcasting frequency for interstellar communication was suggested.

一旦发现这种波长的存在,不久之后就有人提出可把它用为星际通讯的可辨认的广播频率。

The imagination boggles at the thought of interstellar distances

一想到星际间的遥远距离,人们就惊恐得不敢想象。

Theoretical Studies of Aminoacetonitrile Production in the Interstellar Medium

在星际媒介中合成H2NCH2CN分子的理论研究

Foremost among the techniques used to study dense interstellar region is molecular radio astronomy, a relatively new and rapidly developing interdisciplinary science

在用来研究高密星际区域的技术中,最重要的是分子射电天文学;这是一门较新的发展迅速的边缘科学。

This means a total period of 100 years in which interstellar communication would be possible

这就是说,星际通信在100年内可能实现。

||1:Orion could reach Mars in weeks, where chemical rockets would take six months or more.||2:A more powerful version could cross the vast void to Alpha Centauri, the nearest star to the sun, in a bit over a century.||3:Since the bigger the rocket, the more efficient it was, he proposed a 240m-ton ship 90 miles in diameter, designed to carry thousands of colonists and make humanity an interstellar species.||4:Whether he was serious, even he may not have known.

||1:“猎户座”火箭可以在几周内到达火星，而化学燃料火箭则需要6个月甚至更长时间。||2:一个更强大的火箭可能在一个多世纪后穿过这片巨大的空间，到达离太阳最近的半人马座阿尔法星。||3:由于火箭越大，效率越高，弗里曼提议建造一艘直径90英里、重2.4亿吨的飞船，用以运送成千上万的殖民者，使人类成为星际物种。||4:弗里曼是否是认真的，即使他可能也不知道。

||1:But gravitational waves are not the only things that BICEP-2 might have picked up.||2:The Milky Way is filled with thin clouds of interstellar dust which, under the influence of the galaxy's magnetic field, scatter and polarise starlight.||3:The BICEP team were confident that the contamination from the dust was small enough not to affect their detection of gravitational waves.||4:But the behaviour of the dust is poorly understood, says Chris Lintott, an astronomer at Oxford University, and not everyone was convinced.

||1:但是引力波并不是BICEP-2发现的唯一一件事情。||2:银河中遍布的星级尘埃，在星系磁场的作用下，散射或极化星光。||3:BICEP小组相信，灰尘的污染非常小，不足以影响其对引力波的测定。||4:但是牛津大学的天文学家Chris Lintott称，对灰尘行迹我们理解不足，而且无法令所有人信服。

||1:Nothing is known about how extraterrestrials might take in information.||2:A pair of plaques sent in the early 1970s with Pioneer 10 and 11, two spacecraft, show nude human beings and a rough map to find Earth—rudimentary stuff, but even that assumes aliens can see.||3:Since such craft have no more than an infinitesimal chance of being found, radio broadcasts from Earth, travelling at the speed of light, are more likely to make contact.||4:But just as a terrestrial radio must be tuned to the right frequency, so must the interstellar kind.||5:How would aliens happen upon the correct one? The Pioneer plaque gives a hint in the form of a basic diagram of a hydrogen atom, the magnetic polarity of which flips at regular intervals, with a frequency of 1,420MHz.||6:Since hydrogen is the most abundant element in the universe, the hope is that this sketch might act as a sort of telephone number.

||1:关于外星人如何获取信息，我们一无所知。||2:上世纪70年代初，“先锋10号”和“11号”两艘宇宙飞船发射了一对牌匾，上面展示了裸体的人类，还有一张寻找地球基础生命的粗略地图，但仍假设外星人能看到。||3:由于这种飞行器被发现的机会微乎其微，所以来自地球的以光速飞行的无线电广播更有可能与之接触。||4:但是，就像地球上的无线电必须调到合适的频率一样，星际间的无线电也必须调到合适的频率。||5:外星人如何碰巧找到正确的频率呢？先驱牌匾以氢原子基本图的形式给出了一个提示，氢原子的磁极按一定的间隔翻转，频率为1420mhz。||6:因为氢是宇宙中最丰富的元素，所以希望这张草图能充当某种通讯号码。

interstellar gas

星际气体

interstellar wind

星际风

interstellar dust

星际尘埃

interstellar line

星际谱线

interstellar grain

星际尘粒

interstellar grain

星际粒子

Interstellar meteor

恒星际流星

interstellar flight

星际飞行

interstellar travel

星际航行

interstellar medium

星际介质

interstellar travel

星际旅行

interstellar medium

星际媒质

interstellar molecule

星际间分子

interstellar hydroxyl

星际羟基

interstellar reddening

星际红化

interstellar molecules

星际分子

interstellar radiation

星际辐射

an interstellar travel

星际飞行

interstellar space law

星际空间法

interstellar formaldehyde

星际甲醛