That's also of great value scientifically.

这个外球面区域的科学研究意义很大。

All points on the surface of a sphere are equally distant from the center.

球心球面上任何一点的距离都一样。

Say we have a lens that has a spherical face on both sides, known as a convex lens.

我们有一个具有球面的镜头 两侧，称为凸透镜。

There actually is something called the Riemann sphere that involves dividing by zero by a different method, but that's a story for another day.

事实上，有个叫黎曼球面的东西，它涉过不同的方法来除以 0，但今天我们且不谈这个。

Initially the telescope used line feeds, elongated receivers that could gather signals within the focal line of the spherical dish.

最初， 望远镜使用线馈送，细长的接收器可以收集球面盘焦线内的信号。

Hubble Space Telescope Program Manager Douglas Broome delivered the troubling news: “The conclusion we’ve come to is that a significant spherical aberration appears to be present in the optics, in the optical telescope system optics, ” he said.

哈勃太空望远镜项目经道格拉斯·布鲁姆 (Douglas Broome) 发布了这个令人不安的消息：“我们得出的结论是，光学望远镜系统的光学元件中似乎存在明显的球面像差， ” 他说。