Earth and Sky:By Jeff Swicord Sarah Creek, Mary

Scientists Working to Save Chesapeake Bay Oyster Population Chespeake Bay The Chesapeake Bay, on the Atlantic coast, is the largest estuary in the United States. It is famous for its seafood, especially crabs and oysters. However, in the last centur

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太阳科普 第3期

The winter solstice events at Maeshowe demonstrate 梅萧韦古墓葬的冬至事件 an intimate and precise knowledge of 展现了古人 the sun's movements through the sky. 对太阳运行轨迹的精确了解 It was the first step on ourjourney to

太阳科普 第4期

It's easy to appreciate the power of the sun 在这样炎热的夏日，站在德州湾海边 on a nice hot summer's day like here on the Texas Gulf Coast. 不难体会太阳的威力 And you can feel the power of the sun on your skin, 皮肤能清楚感

太阳科普 第2期

This is Orkney to live here is to know the importance of the sun. 这是奥克尼，住在这里的人对太阳的重要性了然于心 In the summer the days are long and full of light. 夏季时，这里的白昼漫长明亮 In December it's a diff

太阳科普 第6期

The composition of the sun lies in this bar code. 这个条码说明了太阳的组成 All the thin lines are caused by tiny amounts of complex elements 这些细细的线条，都是微量复杂元素造成的 metals like iron and magnesium. 好比说

太阳科普 第7期

As they grow bigger and bigger, 随着体积越来越大 they start to spin and throw out a disk of debris 它们开始旋转，甩出的碎屑形成盘状 that will coalesce to form a solar system. 在日后融合形成太阳系 This kind of process

太阳科普 第8期

Now the speed of light is a very,very big number. 光速是个很大的数字 So if we just take a small amount of mass, 所以只要一点点质量 you get a huge amount of energy. 就含有大量能量 And that's the energy which actually powers ou

太阳科普 第9期

Plasmas I always like to think of as being like naughty children. 我一直觉得电浆就像调皮的小孩 They're full of energy and they are, 充满了能量，随时随地都想捣蛋 want to misbehave and it's ourjob to try 我们的工作就是

太阳科普 第10期

Some people feel quite miserable and depressed 有些人一到冬天就觉得忧郁 and gloomy during the winter months. 消沉，诸事不顺 And some people,a small proportion, 少数人甚至 will go on to develop clinically significant depression

太阳科普 第12期

And after a while a pattern emerged. 久而久之，人们就归纳出一个模式 If you observe sun spots over several years, 若连续观察太阳黑子好几年 they come and go with an about an eleven year cycle. 会发现它们约每隔11年会周

太阳科普 第18期

With one you could power a small village. 一个太阳能碟能满足一座小村的能源需求 A field of them could power a city. 一大批则能供给一座城市所需的能源 Each system produces about 25 kw 一套系统的发电量是25千瓦

太阳科普 第17期

As the world warms up, 在地球日益暖化的今天 the sun may yet prove an unlikely source of cooling. 太阳也许能提供意想不到的冷却效果 The greenhouse effect could be stopped 我们可以藉由利用太阳的热力 by harnessing i

太阳科普 第16期

The auroras dancing displays of celestial light 在天空中熠熠生辉的极光 are caused by particles from the solar storm smashing 是太阳风暴夹带的微粒 through the magnetic field at the poles. 撞击地球两极磁场的结果 When the

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It is dawn and the sun is rising 黎明，朝阳升起 as it has every day for the last 5 billion years. 五十亿年如一日 For millennia it has been a constant golden disk 千万年来，太阳一直有如一个金色圆盘般地 shining its unch