我们发现这样的圆环和其他恒星周围如北落师门周围的圆环看起来十分相似。
When we do that we find that this ring looks just like the rings we see around other stars, like Fomalhaut.
克拉克博士想到的唯一解释是这颗恒星在爆炸成超新星之前可能减少了十分之九的质量。
The only explanation Dr Clark can think of is that the star must have somehow shed nine-tenths of its mass before it exploded as a supernova.
它每4.7天环绕恒星一周，其轨道为一个适度的椭圆，平均距离仅0.04个天文单位(为水星距太阳的十分之一)。
It orbits its star every 4.7 days, in a moderately elliptical orbit at a mean distance of only 0.04 AU (one tenth of Mercury's distance from the sun).
如果漩磁盘的气体足够大—它的恒星的十分之一或更多—磁盘的重力能够是磁盘动荡，约翰斯说到。
If the swirling disk of gas is massive enough-one-tenth the mass of its star or more-johns-krull says the gravitational power of the disk can make the disk unstable.
Kepler 10 - b在围绕恒星运转时会遮挡恒星千分之一的光芒，举个例子来说，就好像你从一万多个灯泡中取走一个。
The planet blocked about a ten-thousandth of its star's light, "like if you had 10,000 light bulbs and take one away," Batalha said.
虽然它是面积最大的星座之一，但却并没有十分明亮的恒星。
Although one of the largest constellations in area, it boasts no bright stars.
当我们算出了在各个恒星中锂原子的总数，同位素锂- 7的总量仅是在那里应有量的三分之一。
When we count up the lithium atoms held in stars, there is only one-third as much of the lithium-7 isotope as there should be.
是的，恒星都有自己的大气圈那是我们肉眼可见的一个普通恒星的唯一一部分。
Yes, stars can have atmospheres; that's typically the only part of a star we can see directly.
“格里斯876”是一颗小型红色恒星，其质量约为太阳的三分之一。
Gliese 876 is a small, red star with about one-third the mass of the sun.
其中一个最活跃的恒星形成区域靠近地球，N11是在大麦哲伦星云(一个邻近星系)里的气云和星团所组成的复杂网络的一部分。
One of the most active star-forming regions near Earth, N11 is part of a complex network of gas clouds and star clusters in the Large Magellanic cloud, a neighboring galaxy.
这片星云也是多数大质量恒星的家园，目前仅有的被“称出重量”的恒星就在这一区域，这颗巨大的恒星是一个被称为A1的双星系统的一部分，它的质量大约为太阳的116倍。
This nebula is also home to the most massive star ever to be "weighed" so far. This behemoth, part of a binary system called A1, is estimated to be roughly 116 times the mass of the sun.
目前，只有在罕见的情况之下才能获得恒星的准确星龄- - -具体来说，一颗恒星是星团的一部分，星团的其他成员来自同一个星云。
At the moment, getting an accurate idea of stellar age is possible only in unusual circumstances-specifically, if a star is part of a cluster whose members formed from the same cloud of gas.
哈勃最近拍的这个星云的局部图像表明一颗质量十分巨大的恒星正逃离这个区域。
A recent Hubble image of part of the nebula has uncovered a very massive star escaping from the region.
这片星云也是多数大质量恒星的家园，目前仅有的被“称出重量”的恒星就在这一区域，这颗巨大的恒星是一个被称为A1的双星系统的一部分，它的质量大约为太阳的116倍。
This nebula is also home to the most massive star ever to be? Weighed? So far. This behemoth, part of a binary system called A1, is estimated to be roughly 116 times the mass of the sun.
这个方法设想行星的一部分从其环绕的恒星和我们的视线之间越过，这会造成在我们看来恒星稍稍变暗了一些。
This method assumes that some percentage of planets will pass between our line of sight and the stars they orbit around, causing those stars to dim just a fraction from our perspective.
这种光束很容易穿透恒星的外层，但是恒星的内核的密度将足以吸收其中的一部分。
Such a beam would easily penetrate the star's outer layer, but the stellar core would be sufficiently dense to absorb part of it.
这个宇宙级水母被看作是泡泡状的超新星遗迹IC 443的一部分。 超新星遗迹是大质量恒星爆发时向外扩张的碎片云。
In fact, the cosmic jellyfish is seen to be part of bubble-shaped supernova remnant IC 443, the expanding debris cloud from a massive star that exploded.
它们每次经过恒星面前的时间，分别大约是19.24天和38.91天，但这个时间间隔有一定的变动范围，里层行星在4分钟范围内，外层行星在39分钟范围内。
They cross in front of their star about once every 19.24 and 38.91 days, but those times can vary by up to 4 minutes for the inner planet and 39 minutes for the outer one.
这颗恒星很可能是银河系几十亿前年与其他星系碰撞时最原始的一部分。
It's possible the star was originally part of the Milky Way when it collided with the other galaxy billions of years ago.
这幅哈勃最近拍摄的照片只是星系中最大规模的可见恒星诞生区域-船底座-之中一小部分。
This new Hubble photo is but a small portion of one of the largest seen star-birth regions in the galaxy, the Carina Nebula.
由哈勃空间望远镜担任的后续观测在2005年分离出了发自背景恒星、经过前方恒星时略有偏移的光线。
Follow-up observations by Hubble Space Telescope in 2005 separated the light of the slightly offset foreground star from the background star.
奇异子的速度很大，能在四分钟内穿过像太阳这样的恒星或行星。
Q balls are speedy, zipping through a planet or star like our Sun in less than four minutes.
科学家认为，图片中的恒星为一颗超新星爆炸后恒星云的一部分。
Scientists believe the stars in the image are part of a stellar cluster in which a supernova exploded.
据估计银河系中三分之一的恒星要么是双星要么是多恒星系统的一部分。
It is estimated that one-third of the stars in the Milky Way are either binary or part of a multiple-star system.
作为银河系最密集的一部分，大量恒星周期性诞生消亡产生了这些尘埃。
Being such a crowded part of the Galaxy, there have been many cycles of starbirth to produce such dust.
他的模型中足足有四分之一都可以产生长寿恒星。
Fully a quarter of his models led to long-lived stars, but with an important caveat.
很多年以前天文学家就已经知道，有些星系的组成中没有任何一颗新形成的星体，它们都是由一些年代十分久远的恒星组成的。
Astronomers have also known for years that some large galaxies don't seem to be forming any new stars; they are full of aging SUNS.
很多年以前天文学家就已经知道，有些星系的组成中没有任何一颗新形成的星体，它们都是由一些年代十分久远的恒星组成的。
Astronomers have also known for years that some large galaxies don't seem to be forming any new stars; they are full of aging SUNS.
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