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地球离最近的恒星大约为4光年。
The nearest star to earth is about 4 light years away.
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我们可以期待在一颗恒星位置上的一个微小晃动。
We might look for a tiny wobble in the position of a star.
《柯林斯英汉双解大词典》
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首先，天文学家要寻找一颗恒星。
First of all, astronomers look for a star.
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当天文学家发现了这颗恒星，他们就会观察它周围的行星。
When astronomers have found the star, they look at the planets around it.
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插图：地球和月球在恒星前方交叉。
Illustration: Planet and moon cross in front of star.
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没有恒星会真的在这一过程中碰撞。
No stars actually collide in the process.
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恒星的质量会影响其表面温度。
The mass of a star affects surface temperature.
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恒星的颜色取决于它的表面温度。
The color of a star depends on surface temperature.
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这样的恒星可能看起来怪怪的。
Such a star would look odd, though.
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但找到新生的巨型恒星很不容易。
But finding nascent massive stars has proven difficult.
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出人意料的是，黑洞也会弹射恒星。
Surprisingly, the black hole also catapults stars away.
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热恒星的紫外辐射使星云发光。
Ultraviolet radiation from the hot star powers the nebular glow.
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这些古老的恒星密度大得惊人。
These ancient stars are incredibly dense.
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星团由大量同时形成的恒星构成。
Stellarclusters are composed of many stars that develop at the same time.
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中央的明亮天体是一颗前景中的恒星。
The bright object in the center is a foreground star.
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所有的恒星的重力都与其压力相平衡。
All stars balance gravity with pressure.
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最终，大多数恒星能够逃脱。
Eventually most stars escape.
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恒星的亮度取决于它的表面温度和大小。
The brightness of a star depends on its surface temperature and size.
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恒星的大小影响它的亮度。
The size of a star affects its brightness.
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多少恒星？他们是十四个。
How many stars? There are fourteen.
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恒星正在该暗星云中形成。
Stars are forming within the dark cloud.
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几乎没有已知的新恒星形成于椭圆星系。
Few new stars are known to form in elliptical galaxies.
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微型类星体是一种质量接近黑洞的恒星。
Microquasars are black holes of about the same mass as a star.
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流星就在教堂的矮墙上方穿过恒星轨迹。
The meteor cuts across the star trails just above the lower church wall.
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通常恒星的质量越大，它的寿命就越短。
The greater a star's mass, the shorter its lifespan generally is.
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在此阶段，这个恒星变成了巨大的红巨星。
At this stage, the star becomes a large red giant.
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然而直接探测其它恒星的磁场是很困难的。
Directly detecting the magnetic fields of other stars, however, can be difficult.
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一颗恒星可以转多快呢？
How fast can a star spin?
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实际上它根本不是恒星。
In fact, it's not a star at all.
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这颗恒星随后发生爆炸，成为II型超新星。
The star then explodes in a so-called Type II supernova.
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