And it can be affected by gravity.

时空会受到重力的影响。

The more mass, the more that space gets bent and distorted by gravity.

质量越大，时空被引力扭曲得越厉害。

We've seen how orbital resonances can be forced by tides and by gravity.

我们已经学过轨道共振是如何被引潮力和引力所影响的。

And then there's the planet itself, which is literally held together by gravity.

然后就是地球本身了，实际上这是由引力组成的地球。

Today you learned that open clusters contain hundreds or thousands of stars held together by gravity.

今天你了解到，开放星团包含数百或数千颗恒星，通过引力聚集在一起。

However, the matter is all attracting itself by gravity.

然而，物质都是靠引力吸引自己的。

And there you have it. Our solar system, formed from a disk, sculpted by gravity.

就是这样，我们的太阳系从一个碟状物开始，被引力塑造而成。

And you’re pulling back, connected across trillions of kilometers by gravity.

而你正在后退，通过重力连接数万亿公里。

In the quiet, his imagination roamed, untethered by gravity, dancing among galaxies.

在寂静中，他的想象力漫游，不受重力的束缚，在星系中翩翩起舞。

Water races in, millions of gallons, and all of it moved only by gravity.

数百万加仑的水涌入，并且全部仅靠重力移动。

The O'Neill Cylinder, as it is known today, creates artificial gravity by rotating on its axis.

众所周知，奥尼尔圆柱体通过绕其轴旋转产生人造重力。

They say it's powered only by gravity, but this video was not recorded all in one take.

他们说它仅由重力驱动，但这段视频并不是一次拍摄完成的。

The Sun's magnetic field is a tangled web because even though it's held together by gravity, the plasma doesn't rotate evenly.

太阳的磁场是一张交错的网，尽管它由引力将其结合在一起，但等离子体在其中无法均匀的旋转。

That's about ten times the acceleration caused by gravity that you'd feel just by jumping in the air.

这大约是重力加速度的十倍 当你在空中跳跃时的感觉。

Anytime a bunch of objects held together by gravity are zooming and circling around, their individual paths are nearly impossible to predict.

任何时候，一堆物体被引力拉在一起的物质缩放和旋转时，它们各自的路径几乎是不可能预测的。

These deviations from the flat surface are acted upon by gravity, which tries to restore the surface to its original flat state.

这些从平坦表面偏离的现象会受到重力的作用，重力会试图将表面恢复到原来的平坦状态。

One of the consequences of Einstein's theory said that light should be bent by gravity as it approaches an object.

爱因斯坦理论的推论之一是，光在接近物体时会因引力而发生弯曲。

With light, it doesn't bend nearly as much as matter does, but it does curve if it moves through space distorted by gravity.

对于光，它不像物质那样弯曲，但如果它在被重力扭曲的空间中移动，它也会扭曲。

The elevator stays vertical because the counterweight is thrown outward by the Earth's rotation and the base is held down by gravity.

电梯保持垂直，因为配重因地球自转而向外抛出，而底座则因重力而被压住。

An orbit like this is still closed; that is, the orbit repeats itself and the rock is still bound to the Earth by gravity.

这样的轨道仍然是闭合的；也就是说，轨道会周期性重复，石头仍然受地球的引力的束缚。