Their plan was to have the Stardust orbit the sun three times.

他们的计划是让星尘号绕太阳运转三次。

The galaxies are still orbiting after all this time. Why are they bound to the cluster?

这些星系历经许久，始终在它们初始轨道上运行。它们为什么会被束缚在星系簇上？

She orbited the Earth forty-eight times and spent almost three days in space.

她绕地球四十八圈， 并在太空中度过了将近三天。

But this planet orbits three times as far as Neptune from the sun and 93 times Earth's distance from the sun.

但是这颗行星的轨道距离是海王星到太阳距离的3倍，是地球到太阳距离的93倍。

Which is fast enough to completely orbit the entire earth more than seven times in a single second which looks like this while it's happening.

它的速度足以在一秒钟内环绕整个地球 7 次以上，就像这样。

One of the main challenges in adopting good sleeping patterns in space is to get used to the frequent day and night cycle, caused by orbiting the Earth 16 times in 24 hours.

在太空中采用良好睡眠模式的主要挑战之一是适应频繁的昼夜循环，这是由于 24 小时绕地球运行 16 圈而造成的。