科学研究   常速英语

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Scientists created the first artificial elements during World War II, and they were actually classified at first, and it was only afterward that they were allowed to announce the discovery ...

科学家创造了第一批人造元素 在第二次世界大战期间，他们实际上是 起初是机密，后来才 他们被允许宣布这一发现 这些新元素。 创建新元素时，基本的 idea 是你有一个目标 而你有一束其他的东西，并且 ...

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A ubiquitous chemical called Bisphenol A, better known as BPA, coats the inside of many food and drink cans. This lining is 2 micrometers thick, less than 1/8th of the thickness of a human hai...

一种普遍存在的化学物质，称为双酚 A， 更广为人知的是 BPA，覆盖在许多 食品和饮料罐。 此衬里厚 2 微米，小于 人类头发粗细的 1/8。 它是金属和 确保 一罐苏打水会保留它的嘶嘶声和味道。 因为它便宜...

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This is Jezero crater. Today, it is a hostile landscape too bitterly cold and dry for any living thing to survive. A few billion years ago, however, Jezero might have looked similar to Earth’s own ...

这是 Jezero 陨石坑。今天，这是一个充满敌意的景观，太过寒冷和干燥，任何生物都无法生存。 然而，几十亿年前，Jezero 可能看起来与地球上位于土耳其的萨尔达湖相似。 那时，火星拥有更厚的大气层。 它使地球变暖，足以...

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Situated amidst an arid desert, the stunning blue pools are hard to miss. These freshwater pools, or pozas, are located in Cuatro Ciénegas, a butterfly-shaped basin nestled in the mountain...

坐落在干旱的沙漠中， 令人惊叹的蓝色泳池不容错过。 这些淡水池或 pozas 位于 在 Cuatro Ciénegas，一个蝴蝶形的盆地 坐落在墨西哥北部的山区。 超过 300 个 pozas 横跨大约 800...

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In 1879, Charles Darwin wrote to his colleague Joseph Dalton Hooker about an “abominable mystery" in the fossil record. He was perplexed at how rapidly major families of flowering and frui...

1879 年，查尔斯·达尔文 （Charles Darwin） 写信给他的同事 约瑟夫·道尔顿·胡克 （Joseph Dalton Hooker） 谈一个“可憎的谜团” 在化石记录中。 他对各大家族的速度之快感到困惑 ...

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One day, we want to take humanity into space. But why don't we start small? Take one solar power station, 10,000 people, and 10 million tons of crumbled Moon rock, and you get a space habitat. ...

有一天，我们希望将人类带入太空。 但是，我们为什么不从小处着手呢？ 以一个太阳能发电站、10,000 人和 1000 万吨碎月球岩石为例，你就会得到一个太空栖息地。 斯坦福 Torus。这个栖息地将如何运作？谁可以住在那里...

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It's almost as old as the Universe, and as massive as 34 billion Suns. It eats stars for breakfast. And now it's about to consume ours. Behold, the great and powerful black hole with the catc...

它几乎与宇宙一样古老，与 340 亿个太阳一样大。 它早餐吃星星。 现在它即将消耗我们的。 看啊，那个巨大而强大的黑洞，它的名字很吸引人 J2157。 如果它离我们的太阳系足够近，它会以多快的速度摧毁我们？对于我们的...

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This rogue star has been traveling the Universe. And now, it's finally entering our Solar System. But this isn't just any regular star. It's known as a quasi-star and it's one of the biggest ...

这颗流氓星一直在宇宙中旅行。 现在，它终于进入了我们的太阳系。 但这可不是普通的明星。 它被称为准恒星，是现存最大的恒星之一。 如果这颗恒星进入我们的太阳系会发生什么？地球会受到什么影响？ 这是假设，如果一颗准...