And just like the rings of Saturn, Earth's rings wouldn't last forever.

并且就像土星环一样地球的行星环不会永存。

Each planet offers a unique environment, from the scorching temperatures of Venus to the icy rings of Saturn.

每个行星都提供独特的环境，从金星的灼热温度到土星的冰冷环。

When Galileo and other early astronomers pointed their telescopes at the sky, multitudes were revealed: Craters on the Moon, the phases of Venus, Jupiter's moons, the rings of Saturn, and so much more.

当伽利略和其他早期天文学家把望远镜对准天空时，发现了许多东西：月球上的环形山、金星的相位、木星的卫星、土星的光环等等。