科学家们在争论一颗小行星是否要撞上地球。
Scientists were debating whether an asteroid was about to hit the Earth.
一颗小行星可能已经把美国毁灭了——而我可能几个小时内都没有听说这个消息。
An asteroid could have annihilated the USA—and I wouldn't have heard the news for hours.
天文学家在距离地球不远处发现一颗小行星，它与地球在同一轨道上围绕太阳运行。
Astronomers have detected an asteroid not far from Earth, moving in the same orbit around the Sun.
探索一颗小行星和彗星们的相互作用。
空间站失衡，旋转着飞向一颗小行星。
The station lost its placement and began spinning towards an asteroid.
它可能是一颗小行星或者衰竭的彗星。
这意味着它们最有可能来自一颗小行星。
苏菲知道这个世界只是宇宙中的一颗小行星。
Sophie knew that the world was only a small planet in space.
我们只是一颗平常恒星的一颗小行星上的一种高等猴子。
We are just an advanced breed of monkeys on a minor planet of a very average star.
实际上，至少有一颗小行星是用动态控制拍摄的马铃薯。
At least one asteroid is, in fact, a potato filmed using a motion control camera.
在本指南中，软件将在相关的三张图片中检测一颗小行星。
In this tutorial, the software is used to detect an asteroid in a set of three images.
周一早晨一颗小行星和地球擦肩而过，曾因为其太小而误认为是太空垃圾。
Earth got a close shave Monday morning from an asteroid so small it was originally mistaken for space junk.
在那段时期的中间，也就是三叠纪时期，一颗小行星撞击了地球。
About halfway through that period, known as the Triassic, an asteroid struck Earth.
从一颗小行星的第一批样本取回的正在进行的任务可能在太空丢失。
An ongoing mission to bring back the first samples from an asteroid may be lost in space.
住在一颗小行星将类似的微重力环境所经历过的人员乘坐国际空间站。
Living in an asteroid's microgravity would be similar to the environment experienced by crews aboard the International Space Station.
最近的计算表明，或早或迟在八分钟之内，一颗小行星将会安全无虞的飞身擦过地球。
The latest calculations suggest that had the asteroid arrived just eight minutes earlier or later, it would have zoomed past Earth harmlessly.
2001年，伽利略号探测到一颗小行星曾经撞击过卫星，形成了瓦尔哈拉撞击盆地。
In 2001, Galileo detected that an asteroid had struck the moon, forming the Valhalla impact basin.
当一颗小行星进入一个气体天体的大气层时，会留下不同的热度和化学影响。
And when an asteroid takes a nosedive into a gas giant's atmosphere, it leaves different thermal and chemical fingerprints to a comet impact.
这是有吸引力的，因为很少的燃料所需的土地上的一颗小行星，而短于一趟旅程到达火星。
This is attractive because very little fuel is needed to land on an asteroid, and the journey is shorter than a trip to Mars.
人的身体是一颗小行星上的一粒尘埃，这一事实使人类产生自己是一个渺小的造物的幻觉。
The fact that mans body is a speck of dust on a small planet leads to the illusion that humans are a small creation.
而今天，一块松饼含约500卡路里，相当于过去20倍的脂肪，几乎有一颗小行星那么大。
Today, a muffin averages 500 calories, 20-plus grams of fat, and are closer to the size of a small planet.
人的身体是一颗小行星上的一粒尘埃，这一事实使人类产生自己是一个渺小的造物的幻觉。
The fact that man's body is a speck of dust on a small planet leads to the illusion that humans are a small creation.
如果一颗小行星即将与地球相撞，人类只能存活最后一小时，在这最后的60分钟里，你会做些什么呢？
An asteroid is on a collision course with the earth and you have one hour left to live. What would you do in your last 60 minutes?
众所周知，6千5百万年前一颗小行星的撞击导致了恐龙的灭绝，然而一颗大彗星的撞击可能是同样致命的。
An asteroid impact is famously responsible for the extinction of the dinosaurs 65 million years ago, but large comet impacts may be equally deadly.
众所周知，6千5百万年前一颗小行星的撞击导致了恐龙的灭绝，然而一颗大彗星的撞击可能是同样致命的。
An asteroid impact is famously responsible for the extinction of the dinosaurs 65 million years ago, but large comet impacts may be equally deadly.
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