Manhattan, who first discovered it with his telescope 20,000 lightyearsago.
两万光年前是他首次用望远镜发现了该地区。
2
For this new mega-maser, the light captured in today's photo was emitted 12 billion yearsago.
对这次新发现的巨型脉泽而言，我们今天照片里捕获的光线是在120亿年之前发出的。
3
A new look at Stephan's Quintet, a compact group of galaxies discovered about 130 yearsago and located 280 million lightyears from Earth. One galaxy is passing through a core of four other galaxies.
对130年前发现，距地球2.8亿光年的名为Stephan ' s Quintet的一组星系重新观察：其中一个星系正通过其他四个星系的核心部分。