So it has come as a surprise over the past decade that black hole activity and star formation are closely intertwined 因此，在过去的10几年间，人们对于黑洞的活动与恒星生成之间的关联感到十分讶异。
[ left ] ? a towering " mountain " of cold hydrogen gas laced with dust is the site of new star formation in the carina nebula 左图? ?一个饰有尘埃花边高耸的冷氢气“山脉”正是船底座星云中新恒星诞生地。
They questioned the usual assumption that star formation begins with cores containing at least one solar mass or more of material 他们质疑一般的假设：恒星形成起始的云核，含有至少一个太阳质量以上的物质。
When the universe was relatively young ? one billion years old ? the star formation rate was already high , about a third of its peak value 宇宙还很年轻时（ 10亿年左右） ，恒星形成率已经非常高了，大约是全盛时期的1 / 3 。
The result would be to keep the rate of star formation reasonably smooth , stopping a galaxy burning itself out in a mere few billion years 这样，便能够使新星的形成较为顺利，而且星系不至于在几十亿年后就自行烧毁。
Hot bluish white clusters of massive stars are scattered throughout the galaxy , interspersed with numerous dustier reddish regions of current star formation 炽热的蓝白色大质量恒星群遍布整个星系，散布在众多充满尘埃略带红色的恒星诞生区中。
He has worked in fields ranging from star formation to active galactic nuclei and is now chair of the astronomy department at the university of washington 他的研究?围广泛，从恒星的形成至活跃星系核均有涉猎，目前担任美国华盛顿大学天文系系主任。
This indicates that there are a lot of high density clumps with different velocities around the massive star formation , which is likely to originate from outflow 这说明在在大质量恒星形成区存在大量的速率不同的高密度分子团块。它们可能起源于外流之中。
The core of a massive star collapses by a factor of 105 from its birth through neutron star formation , so its magnetic field should become 1010 times stronger 大质量星体的核心，从它出生到变成中子星，塌缩的比例达105 ，因此它的磁场强度应该会增强为1010倍。
It is thought that the expulsion of matter from a galaxy during bursts of star formation is one of the main ways of spreading elements like carbon and oxygen throughout the universe 人们认为，星系在狂暴的产星过程中外抛的物质是将碳、氧等元素洒遍宇宙的一大主要途径。
