Its oscillation depends on the strength of the gravitational field.
它的摆动取决于重力场的力。
If a spacecraft travels faster than 11 km a second, it escapes the Earth's gravitational pull.
如果一架宇宙飞船飞行超过每秒11公里，它就能摆脱地球引力。
It is the gravitational interaction with planets, right?
这是引力与行星的相互作用，对吧？
Finally, scientists measure the star's wobble due to the planet's gravitational tug, known as the radial velocity.
最后，科学家测量了由于行星的引力拖拉而产生的恒星摆动，这就是径向速度。
Today such gravitational compensation probably would not occur: the outer layer of the Moon is too cold and stiff.
今天这种引力补偿很有可能不会发生：月球的外层过于寒冷和坚硬。
Their loveliness masks the toll exacted by the gravitational pull of their large bodies and the strain of daily survival.
他们的可爱掩饰了引力对巨大身体的拖累和日常生活的艰辛。
Third, the gravitational shield of the giant outer planets, while highly efficient, must occasionally fail to protect Earth.
第三，巨大的外行星的引力屏障虽然非常有效，但偶尔也会无法保护地球。
As Europa orbits its planet, however, it flexes due to the gravitational tug-of-war between it, its sister moons, and Jupiter.
然而，当木卫二绕其行星运行时，由于姊妹卫星和木星之间的引力拉锯战，它会弯曲。
According to one hypothesis, the planet's gravitational field tugs on the protoplanetary disk of dust and gas from which it formed.
根据一种假设，这颗行星的重力场会对由尘埃和气体组成的原行星盘产生牵引力。
Under the control of the Sun's gravitational force, each planet maintains an elliptical orbit and all of them travel in the same direction.
在太阳引力的控制下，每个行星都维持在一条椭圆形的轨道上，并按照相同的方向移动。
Astronomers must infer the existence of black holes, which are invisible, from their gravitational influence on the visible bodies surrounding them.
天文学家必须从黑洞对周围可见天体的引力影响推断出不可见的黑洞的存在。
Once Earth had gone through the final stages of its formation, gases bubbled to the surface and were held by Earth's gravitational field to form the atmosphere.
一旦地球经历了其形成的最后阶段，气体就会鼓泡到地表，并被地球的重力场控制，形成大气。
The disk exerts its own gravitational tug, and this interplay of forces robs the planet of momentum in its orbital path, forcing it to spiral in toward the star.
圆盘产生自己的引力拖曳，这种相互作用的力夺走了行 星在其轨道上的动量，迫使它盘旋向恒星的方向。
Astronomers theorize that a black hole forms when a massive object shrinks catastrophically under its own gravity, leaving only a gravitational field so strong that nothing escapes it.
天文学家的理论是，当一个巨大的物体在其自身的引力作用下灾难性地收缩，只留下一个强大的引力场，且没有任何东西能逃脱时，黑洞就形成了。
The ripples are gravitational waves.
这些波动就是重力场波。
And that is 2,000 times the gravitational acceleration.
这也就是重力加速度的2000倍。
That is only one-fifth of the gravitational acceleration.
仅为重力加速度的,五分之一。
Gravitational waves can't exist in one or two-dimensional space.
在一维或二维空间，引力波无法存在。
But gravitational lensing had never before been used in such a precise way.
但是引力透镜还从未以如此精确的方法被使用过。
Free fall is when the forces acting upon you are exclusively gravitational.
自由落体是指，唯一作用力是重力的情况。
So, he was able to explain this using his laws for gravitational attraction.
他根据自己提出的万有引力定律，解释这一定律。
Another aspect of Einstein's work to be tested is the existence of gravitational waves.
爱因斯坦理论有待证实的另一个观点是引力波的存在。
So if we apply that concept, then we first have to know what is the gravitational force.
如果我们运用这概念，我们必须先知道，引力是什么。
I am not the first to notice this gravitational pull amid the angst of divine silence.
我并不是第一个注意到，存在于对神圣的缄默所焦虑之中的这个拉力。
When we throw up an object in a gravitational field, you have the trajectory in a plane.
当我们把一个物体，放到引力场中，我们会得到在一个平面上的轨迹。
The story was different, though, for the fifth wager—that gravitational waves would be detected.
然而，对于第五个赌盘来说--重力波将被发现，结局有可能会不同。
While looking out for a gravitational wave signal, scientists at GEO600 noticed something bizarre.
在寻找重力波信号的过程中，GEO600的科学家们发现了一些奇异现象。
While looking out for a gravitational wave signal, scientists at GEO600 noticed something bizarre.
在寻找重力波信号的过程中，GEO600的科学家们发现了一些奇异现象。
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