英语听力：自然百科 穿越银河系的旅行 Through Milky Way—27
时间：2019-01-22 作者：英语课 分类：自然百科2011年
英语课
But our time traveling isn’t yet over. There is still the question of how the first galaxies 1 kindled 2 the very first stars. We are on a journey visiting the Dark Ages, a time over 12.5 billion years ago. The sight is spectacular. The sky is ablaze 3 with the first stars of the Milky 4 Way, their light piercing the fog, bathing us in a strong ultraviolet energy. These first stars will change the way we see the universe forever. Tom Abel has modeled their lives and their deaths.
The beautiful things is that we now have computers and program them with laws of physics, put/ in them / gravity, hydrodynamics, how gases move around some of the chemistry and as we evolve it all together, we gain an intuition of how a star has come about. And in the cases of the very first stars, this is absolutely crucial.
It's cosmic cookery. Tom takes the basic ingredients available during the Dark Ages, hydrogen, helium, dark matter and gravity and sets the computer simmering. From the models, Tom can recreate the lives of the stars.
Here we see one of the first stars in the universe. It’s a hundred times as massive as the sun, a million times as bright/.
The first stars are huge, swollen 5 by the massive amounts of hydrogen gas pulled in by the gravitational force of dark matter.
As you know that all this fuel to burn, you think they could live for a long time. They run through it so quickly that you know after a few million years they are already dead.
星系( galaxy的名词复数 )； 银河系； 一群（杰出或著名的人物）
- Quasars are the highly energetic cores of distant galaxies. 类星体是遥远星系的极为活跃的核心体。
- We still don't know how many galaxies there are in the universe. 我们还不知道宇宙中有多少个星系。
（使某物）燃烧，着火( kindle的过去式和过去分词 )； 激起（感情等）； 发亮，放光
- We watched as the fire slowly kindled. 我们看着火慢慢地燃烧起来。
- The teacher's praise kindled a spark of hope inside her. 老师的赞扬激起了她内心的希望。
adj.着火的，燃烧的；闪耀的，灯火辉煌的
- The main street was ablaze with lights in the evening.晚上，那条主要街道灯火辉煌。
- Forests are sometimes set ablaze by lightning.森林有时因雷击而起火。
adj.牛奶的，多奶的；乳白色的
- Alexander always has milky coffee at lunchtime.亚历山大总是在午餐时喝掺奶的咖啡。
- I like a hot milky drink at bedtime.我喜欢睡前喝杯热奶饮料。