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听力等级

科学研究   

2023-11-21   Video
What If You Fall into a Black Hole

Keywords:

Black holes are the most powerful and extreme things in the universe and they are wildly weird and complicated. What would happen if you fell inside one and what are they really? First we need...

黑洞是最强大和最极端的宇宙中的事物,它们是疯狂的奇怪而复杂。如果你掉进了一个里面,它们到底是什么?首先,我们需要谈谈空间和时间:空间和时间是宏大的舞台宇宙的游戏展开了。但太空不是固定的阶段和时间是行不通的无论在哪里,每个人都一样。简而言之,...


2023-11-19   Intermediate
The Life of Super-Earths, Dimitar Sasselov, Part Five

Keywords:

Steve: And then when the biologists come up with different possible scenarios for how life could be, then you can tune your instruments in different ways to look for alternatives to Earth-lik...

Steve:然后,当生物学家想出生命可能是什么样子的不同可能情景时,你可以以不同的方式调整你的仪器,寻找系外行星上类地生命的替代品? 萨斯洛夫:这正是我所希望的,当生物学家在实验室里做这些实验时,他们会说,“嗯......你知道这些超级地...


2023-11-19   Video
We Are Modified Fish - A History of Human Evolution

Keywords:

[ Music ] >> You may think you have nothing in common with a creature that lives under water. But at some point in the distant past all mammals shared a common ancestor and that ancest...

[音乐]>>你可能认为你没有共同点与一个生物生活在水下。但在遥远的某个时刻过去所有哺乳动物都有一个共同点祖先和那个祖先是一条鱼。事实证明,我们共享大脑结构是其中之一最佳观赏地点我们可疑过去的残余。>>这是一次旅行从一开始。这是最基本的。我们...


2023-11-17   Intermediate
The Life of Super-Earths, Dimitar Sasselov, Part Four

Keywords:

Steve: Because life is really tenacious. Sasselov: Yeah. Steve: You talk in the book about the effect that synthetic biology, we'll call it—you call it various things and ...

Steve:因为生活真的很顽强。 Sasselov:是的。 Steve:你在书中谈到了合成生物学的影响,我们称之为各种事物,其中一些术语在特定的专业中有不同的含义,但基本上是试图创造一个真正有生命力的人造细胞的想法,这种努力将如何为整个...


2023-11-17   Video
The Accelerator Makes a Substance That Has Not Existed in 13 Billion Years

Keywords:

By using one of the most complicated and powerful machines on the planet, scientists have found a way to glimpse back to the very beginning of time itself. This time machine is a particl...

通过使用最复杂的以及地球上强大的机器,科学家们已经找到了一种窥探的方法回到时间本身的最初。这个时间机器是粒子加速器,它让我们一窥我们的汤新生的宇宙。大事件发生后不久砰,我们的宇宙是一个非常不同的地方。它开始时如此之小、密集和炎热,以至于我们...


2023-11-15   Intermediate
The Life of Super-Earths, Dimitar Sasselov, Part Three

Keywords:

Steve: And on a simpler level, as you point out in the book, let's say the Earth flew out of its orbit, and was just passing through the galaxy untethered to a star; the surface life would al...

Steve:在更简单的层面上,正如你在书中指出的,假设地球飞出了它的轨道,刚刚穿过星系,没有被恒星束缚;表面生命会比这更快地消失,但深处的东西可能会持续很长时间。 Sasselov:这也是一个新的认识。事实上,所有这些深入的生物圈研究都是...


2023-11-15   Video
Your Aching Back

Keywords:

>> So your back's a real pain. Turns out many back problems are the result of our ancestors' transition from walking on four legs to walking on two. The earliest primates lived in trees...

>>所以你的背很疼。原来很多人都回来了问题就是结果我们祖先的'从步行过渡从四条腿走路到两条腿走路。最早的灵长类动物住在树上,然后搬家四肢着地就像现代猴子一样。但到了320万年前,原始人是严格的两足动物。露西等化石在埃塞俄比亚的偏远地区,这就...


2023-11-13   Intermediate
The Life of Super-Earths, Dimitar Sasselov, Part Two

Keywords:

Steve: What do we still need to do to be able to identify the signature of life—even microbial life—on an exoplanet? Sasselov: What we know how to do today is we know technically ho...

Steve:我们还需要做什么才能识别系外行星上生命甚至微生物生命的特征? Sasselov:我们今天所知道的就是我们在技术上知道如何进行遥感。而这本质上是在行星上方的大气中寻找气体。我们已经了解到,在整个 20 世纪,我们可以很好地对非常...


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