The universe looks roughly the same in all directions-even parts that seem to be separated by more than the distance light has traveled since the Big Bang.
我们的宇宙从所有方向看，大致是相同的，甚至包括比自大爆炸后光传播最远的距离更远的分离区域。
Because some brighten or dim significantly in less than a day, their energy-producing regions must be no larger than the distance light can travel in a day - about the size of our solar system.
由于某些类星体在不到一天的时间里明显增亮或变暗，其产能区应该不会比光一天行进的距离长，即约为我们太阳系的大小。
Light-line is one of the companies that will most benefit if new long-distance fiber-optic telecommunications networks are constructed.
如果建设新的长途光纤通信网络，Light-line将是最大的受益公司之一。
This law is known to hold true for galaxies at a distance of at least several billion light years.
这个定律被普遍认为同样适用于至少数十亿光年之远的星系。
When you analyze this light, you can figure out their distance from the Earth, and identify what they are made of, determine their chemical composition.
当你分析这些光的时候，你可以计算出它们与地球的距离，并确定它们由什么构成，查明它们的化学成分。
The attractive force decreases with the distance in the same proportion as light, which, we saw a little while ago, decreases in intensity as the square of the distance increases.
引力随距离减少的程度，跟光线随距离减弱有相同的规律，这个规律我们不久前刚刚讲过，即强度的减弱跟距离的平方成正比。
And even as there will be dark days ahead in Afghanistan, the light of a secure peace can be seen in the distance.
虽然阿富汗仍将有黑暗的日子，但是远方已能看到安全和平的一线曙光。
Light falls off exponentially with distance, so a planet that is, say, twice as close to the sun as Earth is would get much more than twice the solar energy.
随着离开太阳的距离增加，阳光强度呈指数级下降，因此一颗距离太阳比地球近一倍的行星所接受到的阳光远远不止地球所接受到强度的一倍。
From the return pulse, LOLA determines the time of flight which, accounting for the speed of light, reveals the distance from the spacecraft to the lunar surface.
之后激光高度计将参照光速，计算出反射脉冲的渡越时间，从而获得飞船与月球表面之间的距离。
From this distance, oceans, land, clouds, and ice blend into a blur of light, a mere dot against the vastness of space.
在这个距离上，海洋、陆地、白云和冰雪全部被融入一个光斑之中，只是浩瀚的宇宙中的一个小光点而已。
Also remember that bouncing light-even into a shiny reflector that keeps light directional - adds to the distance it travels.
同样还要注意的是，经过反射的光线其行进的距离也会增加，即使使用光面反光板也一样。
The latency cannot be less than the distance the electromagnetic signal has to travel divided by the speed of light.
延迟时间会大于或等于电磁信号传输距离除以光速的比值。
Telescopes cross distance; microscopes, size; other tools detect sounds beyond hearing or light beyond sight.
望远镜跨越距离；显微镜消弭尺寸的限制；还有其他一些工具能够探测到视野之外的声音或光线。
In the course of doing the experiments, the researchers noticed that the particles showed up a few billionths of a second sooner than light would over the same distance.
在实验的过程中，研究人员发现这些粒子的用时比光要少了几十亿分之一秒。
Well, it goes with the speed of light, so in t seconds, it moves a distance cT.
它以光速前进，所以在T秒内，它前进了cT的距离。
Scientists have come up with a much more accurate way of measuring distance - wavelengths and light speed.
但是科学家们已经提出了更精确的测量距离的方法了-波长和光的速度。
At this distance the optical light from stars is shifted, or stretched, to infrared wavelengths that can only be observed in outer space by Spitzer.
在这个距离，恒星的光源光被折射，或拉伸成红外波长，在外层空间只有斯皮策太空望远镜才能观测到。
To the astonishment of the entire world, the neutrinos clocked in 60 nanoseconds sooner than a light beam traveling the same distance would have done.
他们记录到的中微子的行驶时间要比光线行驶相同距离提早了60纳秒，从而使整个世界为之震惊。
Seen from a distance on this sunny day, however, the bright autumn light made it hazy and golden, like a mirage in a fairy tale.
然而在这样一个晴朗的天气从一定距离看去，明亮的秋季光线使它看上去朦胧而辉煌，就像童话中的海市蜃楼。
The space-time ripples cause the distance measured by a light beam to change as the gravitational wave passes by, and the amount of light falling on the photodetector to vary.
时空涟漪使得用光束测量的距离像引力波通过那样变化，同时使得落在光电探测器上的光量发生变化。
One can try focusing on point light sources at a similar distance to the subject of interest.
你可以尝试对焦在与中心物体距离相近的任何一个光源上。
But there is still no lithium battery light enough to power a small electric car over a reasonable distance on a single charge.
但是仍没有轻易做到一次充电能为一辆小型电动车通过一段合理的道路提供电力的锂电池。
The pattern and colors actually help distort the fish's outline when seen in natural light at a distance through water, helping the animal disappear from the view of potential predators.
其实，若是在自然光下、于水中一段距离外，这种图案和色彩有助于扭曲鱼的轮廓，让它在潜在掠食者的视线中消失。
"The distance of this White Dwarf from the Sun is 63 light-years, which is very near our solar system compared with most stars in our galaxy", Luhman said.
“这颗白矮星距离太阳63光年，与银河系中大多数星球相比，它距离我们的太阳系非常近。”卢迈说。
The flashing light dimmed into the distance as the police car rolled to a halt, much to the amazement of its occupants.
警车抛锚了，闪烁的灯光也远去了。这让警车里的人惊奇不已。
In the far distance we had some HMI light units backlighting the mist and the sky; that would outline the shape of the forest.
在道路远端，我们放了一些HM I灯打背景的烟雾和天空，勾勒出森林的轮廓。
In the distance, a fuzzy beam of light appeared, followed by the roar of a horn.
远处出现了一束模糊的光线，随后传来轰鸣声。
In the distance, a fuzzy beam of light appeared, followed by the roar of a horn.
远处出现了一束模糊的光线，随后传来轰鸣声。
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