Second, Jupiter's enormous mass prevents most Sun-bound comets from penetrating the inner solar system.

其次，木星的巨大质量阻止了大多数与太阳结合的彗星穿透太阳系内部。

youdao

An estimated 99.85 percent of the mass of our solar system is contained within the Sun, while the planets collectively make up most of the remaining 0.15 percent.

太阳占据了太阳系总质量的大约99.85%，而在剩余的0.15%中，行星占据了大部分。

youdao

The sun is by far the largest object in our solar system, containing 99.8 percent of the solar system's mass.

太阳是我们已知的太阳系内最大的天体，占有太阳系总质量的99.8％。

youdao

Even though the black hole contains a mass equal to a billion suns, it is compacted into an area about the size of the solar system.

BBC: Hubble spies black hole gobbling galaxy

Some galaxies contain black holes with billions of times the mass of the sun, occupying a volume no bigger across than the orbit of Neptune around our solar system but extending their influence through a cosmic bubble 30 million light years across.

WSJ: Book Review: Gravity's Engines