galaxy

• The starts were formed from gases that originally permeated the whole galaxy .
  恒星是由原来遍及于整个星系内的气体所形成。
• If the energy ratio is low, the hot gas is held in by the gravity of the galaxy .
  若能量比较低，热气体将被星系的引力拘留。
• The surface density of galaxies in a cluster can be measured from photographs .
  一个星系团中星系的表面密度可从其照片上测得。
• Is it a universal phenomenon representing a stage prior to galaxy formation ?
  它是代表了星系形成前某一阶段的一种宇宙现象吗？
• The hot gas will be heated further by any supernova which go off in the galaxy .
  热气体将被星系中爆发的任何超新星进一步加热。
• Cosmologists are debating the possibility that turbulence causes galaxies to form .
  宇宙学家正在争论湍流导致星系诞生的可能性。
• Spiral galaxies are considered to be gravitationally bound configurations of stars .
  旋涡星系被认为是由恒星组成的引力束缚系统。
• There is no absolutely sharp cutoff distinguishing galaxies from globular clusters .
  在星系和球状星团之间没有任何不可逾越的鸿沟。
• The oldest stars in the galaxy exhibit a metal deficiency relative to hydrogen .
  银河系中最年老的恒星表现出一种对氢而言的贫金属性。
• The shape of this galaxy indicates an obvious tendency for its matter to agglomerate .
  这个银河系的形状表明它的物质明显地有团聚在一起的趋势。