Comet Hale-Bopp is hurtling through the inner solar system.

海尔波普彗星正在急速穿过内太阳系。

The same super-tether can also bring the inner solar system closer.

相同的超级系绳也能拉近我们与太阳系内部行星的距离。

There are an estimated 10,000 known asteroids orbiting our region of the inner solar system.

据估计我们的太阳系内部区域有10000颗已知的小行星。

Sky watchers may be able to see Neowise as it passes through the inner solar system.

当Neowise穿过太阳系内部时，天空观测者也许能够看到它。

Because Earth got its water early—really the whole inner solar system got its water early

由于地球很早就有水资源，整个太阳系也在很早就有了水资源。

They don't follow the plane of the inner solar system, but orbit every which way.

它们并不跟着太阳系的内行星轨道，而是以各种不同方式做轨道运动。

It ends up keeping those objects from the inner solar system, where Earth and Mars and Venus are.

它处死来自太阳系内部的物体，那里有地球，火星和金星。

Basalt is the most common type of lava rock found on Venus and throughout the inner Solar System.

玄武岩在金星上普遍存在以及所有其他近日行星上。

Around 100 years ago, a lump of rock and ice four kilometers across is hurtling towards the inner solar system.

大约 100 年前，一块直径 4 公里的岩石和冰块正冲向内太阳系。

After crossing the inner solar system, Galileo is approaching the spot where it will witness the comet's final moments.

穿过内太阳系后，伽利略号正在接近它将见证彗星最后时刻的地点。

Take Jupiter out of the picture, bring this giant comet into the inner solar system, where would it have gone?

把木星拿走，把这颗慧星放到太阳系里，它会到哪里去？

Its journey into the inner solar system cut short, what happens next presents the Galileo scientists with a unique opportunity.

它进入内太阳系的旅程被缩短了，接下来发生的事情给伽利略号的科学家们带来了一个独特的发现机会。

So we had large object surrounding around the inner solar system as the Earth was forming and they were crashing into planets.

所以有大的物体游荡在太阳系里，当地球形成时，撞击着行星。

That's just one percent of the million or more asteroids scientists believe to be our near neighbors in the inner Solar System.

这只是科学家认为在我们的太阳系内部近邻小行星的百万分之一。

So the movement of the giant planets have actually played an important role in the delivery of water to the inner solar system.

因此，巨行星的运动实际上在向内太阳系输送水的过程中起到了重要作用。

There's an idea that Jupiter's gravity tends to take comets that fall toward the inner solar system and fling them away into interstellar space.

有一种观点认为，木星的引力会引向坠落到内层太阳系的彗星，然后把它们抛向星际空间。

Today you learned that past Neptune are vast reservoirs of icy bodies that can become comets if they get poked into the inner solar system.

今天你学到了过去的海王星是一个巨大的冰体储藏库，如果这些冰体进入太阳系内部，就会变成彗星。

But if you end up having Jupiter and Saturn moving outwards, then that is able to suddenly deliver more water into the inner solar system.

但如果木星和土星最终向外移动，就会突然向内太阳系输送更多的水。

Traveling at twice the speed of sound, an enormous asteroid made its way into our inner solar system, on a collision course with the dinosaurs.

一颗巨大的小行星以音速两倍的飞行速度，迎头闯进我们的内太阳系，将要撞击到恐龙的世界。

Since they orbit the Sun on a sphere with no preferred orientation, they come in toward the inner solar system from random directions in the sky.

由于它们绕着太阳在一个没有特定方向的球体上运行，它们会从天空中随机的方向进入太阳系内部。