That means its escape velocity gets higher and higher.

这意味着它的逃逸速度会越来越高。

Give it enough energy and it will achieve escape velocity and fly away.

给它足够多的能量，它就会达到脱离速度，飞走。

As it approaches the Earth, our planet's gravity accelerates it an additional 11 kilometers per second — Earth's escape velocity.

当它接近地球时，地球的引力使它的速度又增加了11千米/秒——这是地球的逃逸速度。

The rock can escape, moving away forever, so we call this the escape velocity.

石头就会逃逸，越来越远，永不停止，我们称这个速度为逃逸速度。

When it hits the planet it'll be moving at escape velocity, that same 11 kilometers per second.

当它落到地球上时的速度就是逃逸速度，同样是11公里每小时。

Conceptually, it's a lot like escape velocity.

从概念上讲，它很像逃逸速度。

Less obviously, the smaller the radius, the stronger the gravity and the greater the escape velocity, too.

容易忽略的是，行星的半径越小，它的引力和逃逸速度也变得越大。

But some are likely to be cancelled-as happened on May 1st to a project in Alberta, CCS is thus having difficulty reaching escape velocity.

很有可能取消一些装置的建造，因为五月一日在亚伯达的一项工程中发现CCS在达到脱离速度方面存在难度。

And if I give it a little sideways kick, it'll miss the Earth but still pass us at escape velocity.

如果我稍微侧向扔一点，它就会错过地球，但仍然以逃逸速度经过我们身边。

The escape velocity of an object like a planet or star depends on how much mass it has and how big it is.

行星或恒星等物体的逃逸速度取决于它的质量和大小。

But once you're up there, asteroids' low escape velocities make it easy to hop between 'em, or even send stuff back to Earth… or Mars.

但是一旦你到达那里， 小行星的低逃逸速度让你很容易在它们之间跳跃，甚至可以把东西送回地球… … 或火星。

That region of space, that surface around the black hole where the escape velocity is the speed of light, is called the EVENT HORIZON for that reason.

这个空间区域中，黑洞周围的表面逃逸速度就是光速，因此被称为事件视界。

You can't ever escape gravity, but if you travel faster than escape velocity for an object you'll get away from it without falling back.

你永远无法逃脱地心引力，但如果你的运动速度比物体的逃逸速度快，你就会持续远离它而不落回去。

Their orbits can be extremely long; they start their fall from so far away, they swing around the Sun at nearly escape velocity, and their orbits are close to being parabolic.

它们的公转轨道可以非常长；它们从极其遥远的地方开始下落，以近乎逃逸速度围绕太阳旋转，而且它们的公转轨道接近一个抛物线。

When it's neutron star-sized, the escape velocity is half the speed of light, but if it's more than 2.8 times the mass of the Sun, the core will keep collapsing.

当它是中子星大小时，逃逸速度就是光速的一半，但如果它的质量超过2.8倍太阳的质量，其核心就将继续坍塌。

Black holes come in different sizes, but for all of them, the escape velocity is greater than the speed of light, so nothing can escape, not matter or light.

黑洞的大小各不相同，但它们的逃逸速度都大于光速，所以无论物质还是光，都无法逃逸。

It's a lot like the idea of escape velocity: throw a rock hard enough and, even though gravity will slow it down, it will escape.

用力扔一块石头，即使重力会使它慢下来，它还是会逃逸。

When its size drops just a little bit more, down to roughly 18 km, an amazing thing happens: the escape velocity at its surface is equal to the speed of light.

当它的大小稍微下降一点，下降到大约18千米时，令人惊奇的事情就发生了：它表面的逃逸速度等于光速。

I know this is an odd concept, and we'll be dealing with it later in more detail when we push escape velocity to its limits...with black holes.

我知道这是一个奇怪的概念，在后面的课程中，逃逸速度的极限，也就是讨论黑洞时，我们会详细解释的。

Way back in Episode 7, I talked about escape velocity, and it's about to become a major player in the unfolding events of the collapsing core of a high mass star.

早在第7集，我就谈到了逃逸速度，它将成为大质量恒星坍塌核心展开事件的主要因素。