And we can just, for purity, assume that there's no gravitational interactions.

为了简单起见，假设，没有重力作用。为了简单起见，假设，没有重力作用。

There will always be some minuscule ones, but we'll assume no gravitational interactions.

其实，总有微小的重力作用，但是，我们假设，没有重力作用。

However, the main cause of this problem is not at all in the gravitational interaction with the earth.

然而，这个问题的主要原因根本不在于与地球的引力相互作用。

One theory suggests that gravitational interactions with a pair of supermassive black holes at the galaxy's center could have kicked out the cluster.

星系中央两个巨型黑洞的相互引力作用促使星团脱离银河。

Computing the mutual gravitational interaction between the earth, sun and moon?

计算地球 太阳 月球之间的 相互引力影响？

And as a consequence of all of this gravitational interaction, more than 99% of the original mass that was there is basically now gone.

由于所有这些引力相互作用的结果，99% 以上的原始质量现在基本都消失了。