The rays of dusty ejected material extends some 900 miles from the Tycho impact site.

喷射出来的放射状物质从第谷的碰撞点向外延展了900英里。

Some of the brightest are from the crater Tycho in the Moon's southern hemisphere, and they stretch for 1500 kilometers.

其中最亮的部分来自月球南半球的第谷陨石坑内，它们可以绵延1500公里。

And that's what Tycho Brahe and his buddy, or his assistant, really, Johannes Kepler did back in the 1600s.

这就是第谷·布拉赫和他的伙伴，确切的说是他的助手，约翰尼斯·开普勒在17世纪所做的。

Tycho Nestoris had left behind a copy of their agreement. Jon read it over thrice. That was simple, he reflected. Simpler than I dared hope. Simpler than it should have been.

泰楚·奈斯特斯留下一份协议复件。琼恩再三研读。太顺利了，他回想，难以置信，顺利得不真实。