One of the 20th century’s premier?scientists was Albert Einstein. In the summer of 1905, this outspoken? young man was rocking his oneyearold baby when he was suddenly inspired?.“E＝mc2” was born.E＝mc2 showed how a small piece of mass could produce an unbelievable amount of energy. Einstein then showed in his “theory of relativity” that not even time, mass or length are constant—they change according to? our experience of them.
Einstein had already become worldfamous when a young exlawyer, returning from the First World War?， started work in California. Using the most highpowered telescope? of the time21, he began the long, slow process of exploring our galaxy22. Edwin Hubble was about to23make astronomy’s greatest breakthrough of the century. He discovered small areas of mist24which were in fact galaxies like our own25，millions of light years away from us，which proved that the universe was vastly larger than had previously been thought26.
?premier ['prem??] adj.最重要的
?outspoken [a?t'sp??kn] adj.直言的，坦率的
?此处是was doing...when...句型，意为：正在做……这时……
?according to 根据
?returning from the First World War在此处作后置定语。
?telescope ['tel?sk??p] n．望远镜
Using the most...是现在分词作方式状语。
galaxy ['ɡæl?ksi] n．星系
be about to do...即将做……
mist [m?st] n．薄雾
which引导定语从句，修饰small areas of mist。
which引导非限制性定语从句，指代上文的整件事情。
