| 1. | The schwarzschild radius of a solar mass black hole is about 3 km
太阳质量的黑洞的史瓦西半径约为3公里。 |
| 2. | Stellar collapse will generate black holes containing at least three solar masses
恒星坍塌将会产生黑洞至少包含三个太阳的质量。 |
| 3. | It could be very light or very heavy . we call those much heavier than one solar mass
它们可以超乎想像的大和重，我们称这种黑洞为 |
| 4. | The following picture schematically summarizes the evolution of a solar mass star
下图勾勒出一颗相等于一个太阳质量恒星的演化路径。 |
| 5. | One solar mass is defined to be the mass of our sun , which is about 2x10
以太阳的质量为比较标准，是天文学家常用的恒星质量单位大约等于2x10 |
| 6. | If a star is less massive than about 0 . 4 solar mass , its life will be quite uneventful
一颗小于太阳质量0 . 4倍的恒星，它的一生是非常平静的。 |
| 7. | We will discuss what will happen to a main sequence star with a mass over about 8 solar masses
假若恒星的质量超过八个太阳质量的话，它会怎样演化呢？ |
| 8. | It is a dark companion of a type o star . its lower mass limit is 7 solar masses and it emits x - rays
这物体的伴星是一颗o型星，质量下限是七个太阳质量，并会放射出x射线。 |
| 9. | For example , the sizes of black holes can vary immensely from a few to a few billions of solar masses
不同类型的黑洞，其大小竟然可以由几个太阳质量至几十亿个太阳质量不等！ |
| 10. | Taking the famous m87 elliptical galaxy as example , the dark matter in its core runs up to 2 . 4 billion solar masses
其中最著名的m87椭圆星系，其核心的黑暗质量竟达24亿太阳质量！ |
