Even if ET has mastered building a rocket that can travel at the speed of light, he may be lying dead inside a weakened craft .
即使外星人已经掌握了制造一枚能以光速飞行的火箭的技术，他也可能死在了一架飞船里。
Today people and goods travel by jet aircraft and fast ships, and information is transmitted at the speed of light over the Internet.
人和货物通过喷气式飞机和快船来流动，而信息是通过互联网以光的速度传送。
If you could move at the speed of light, your time would stand still, if you could move faster than light, your time would move backward.
如果你能以光速运动，你的时间就会静止不动；如果你能以快于光速的速度运动，你的时间就会倒退。
Two years later it would be travelling at 90 per cent of the speed of light.
在过两年，速度达到光速的90%， 远离太阳系； 发射四年之后，飞船开始了时间旅行。
Cherenkov light comes from these particles when the speed of light is exceeded.
切伦科夫光来自光速被超过时的这些粒子。
It is in fact the increase in the speed of light that affects this increase in spin.
实际上那是在以光的速度在加速而影响这个自旋。
Originally, Keeling measured the speed of light in the air samples with a laser beam.
起初，吉林用激光束测量光在这些空气样本中的传播速度。
Since neutrinos have a tiny mass, the speed should be very close to the speed of light.
因为中微子的质量非常小，所以它的速度应该非常接近光速。
Once your speed approaches the speed of light then Newtonian mechanics no longer works.
速度接近光速时,牛顿力学就超出适用范围了。
Those changes in background may alter both the speed of light and the speed of neutrinos.
这些背景的改变会改变光速或者中微子的速度。
The APEX data shows that material in the jet is traveling at about half the speed of light.
APEX数据显示喷流中的物质正以一半光速的速度前进。
Radiation: composed of massless or nearly massless particles that move at the speed of light.
辐射：由以光速运行的无质量或近无质量粒子所构成。
Special relativity came first and is based on the speed of light being constant for everyone.
首先发布的是狭义相对论，它的基础是对于任何一个人来说，光速是恒定不变的。
The area of physics which deals with speeds comparable to the speed of light is called relativity.
物理学领域中，处理相对于光速的速度问题的就是所谓相对论。
Nothing can escape a black hole's gravity because nothing can travel faster than the speed of light.
任何东西都不能逃脱黑洞的引力，因为没有任何东西的速度能超过光速。
To accelerate an object to the speed of light, you'd need nothing short of an infinite amount of energy.
为了把一个物体加速到光速，你需要的简直是无限的能源。
As you reach the speed of light, relativity calculations indicate that an object's mass becomes infinite.
如果达到光速，根据相对论可以计算出这个物体的质量趋于无穷。
Under special relativity, if something travels faster than the speed of light, it goes backwards in time.
根据狭义相对论，如果有什么东西比光速旅行得更快，它就会把时间向后推移。
It will gradually catch up with this slow pulse, reducing the speed of light in the slow pulse's vicinity.
它会逐渐赶上这个更慢的脉冲，降低整个慢脉冲附近光的速度。
Which limits them to the speed of light and makes the possibility of their ever making contact pretty slim.
这限制了它们只能在光速执行旅行，这也让它们曾做出的交流尝试希望渺茫。
That innate drive to be recognized for our tastes has been accelerated to the speed of light by the network.
而这个识别自我温度的内在驱动器被网络那如光速般的速度加速了。
It is so far from Earth that radio signals, traveling at the speed of light, take 16 hours to reach the spacecraft.
它与地球的距离如此之远，以致地球发出的无线电信号要以光速传播16个小时才能到达这部航天器。
At this Cauchy horizon, because of the centrifugal forces involved, particles slow down back to the speed of light.
在柯西视界上，因为产生离心作用，粒子速度减慢，回到光速。
When the telegraph first moved information over long distances at the speed of light, we'd hit a new turning point.
当电报首次以光速长距离传递信息时，我们迎来了转折点。
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。
The planet is so far away, spaceships travelling close to the speed of light would take 20 years to make the journey.
这颗行星过于遥远，以接近光速飞行的宇宙飞船都要花费20年时间才能抵达。
It is impossible to travel faster than the speed of light, and certainly not desirable, as one's hat keeps blowing off.
不可能旅行得比光速更快，当然也不希望这样，因为你的帽子老是会被吹掉。
It is impossible to travel faster than the speed of light, and certainly not desirable, as one's hat keeps blowing off.
不可能旅行得比光速更快，当然也不希望这样，因为你的帽子老是会被吹掉。
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