Well the earth is rotating while simultaneously revolving around the sun.

其实地球在自转的同时也绕太阳转。

Now Mercury has quite a complex orbit.

水星的转轨道有点复杂。

It takes a whole year for the Earth to go around the sun one time.

地球围绕太阳转周需要年。

That's because Mercury is vertical relatively to the plane of its orbit.

这是由水星极轴垂转平面。

I take 557 Earth years to orbit the Sun.

我绕太阳转圈需要 557 年。

It revolves around Earth in a well defined orbit.

它在确的轨道上围绕地球转。

It takes 27 earth days for me to rotate once around.

我转周需要 27 天。

They take about two Earth years to complete their circuits.

这些卫星绕木星转圈需要大约2地球年的时间。

Is because my rotations the same speed as the Earth taught in this rhyme.

是因为我的自转速度和地球的转速度相同。

It goes around the sun once in 365 and almost a quarter day.

地球绕太阳转周的时间是365又四分之天。

Though it spins quickly, Jupiter's orbit around the sun takes about 12 years.

尽管木星自转速度很快，但它绕太阳转周大约需要12年。

The planet Kepler 69c follows a Venus-like orbit around a sunlike star.

开普勒69c围绕颗类太阳恒星运转，其轨道类似金星围绕太阳转的轨道。

It completes an orbit in just 7 hours and 39 minutes.

它只需 7 小时 39 分钟就完成了次转。

The planets in our solar system don't really revolve in perfectly circular orbits.

太阳系中的行星并不是沿着完美的圆形轨道转。

In fact, some are called orphan planets and don't even orbit a star at all.

还有些星球被称为“孤儿星球”，它们就算想转也没有恒星。

In their rotational and orbital movements, stars and their satellites go from right to left.

天体的行星和它们的卫星转和自转的运动，都是从右向左转。

Kepler 62e and 62f are smaller, and orbit a star smaller than the sun.

开普勒62e和开普勒62f体积较小，它们围绕着颗比太阳小的恒星转。

NASA says it takes 165 earth years for Neptune to complete a circuit around the sun.

美国宇航局说海王星绕太阳转周需要165地球年。

Because of this, Pluto crosses inside of Neptune's orbit for 20 years of each 248-year orbit.

因此，每转周期中有20年冥王星会进入海王星轨道内侧。

Well, it actually takes the planet Earth 365 days and six hours to revolve completely around the sun.

事实上，地球围绕太阳转周需要365天零6小时。