英語聽力 學(xué)英語,練聽力,上聽力課堂! 注冊(cè) 登錄
> 在線聽力 > 英語高級(jí)聽力 > 科學(xué)一刻 >  第2篇

科學(xué)一刻 冥王星之心

所屬教程:科學(xué)一刻

瀏覽:

2016年01月11日

手機(jī)版
掃描二維碼方便學(xué)習(xí)和分享
https://online2.tingclass.net/lesson/shi0529/0009/9695/2016_01_04_The_Heart_of_Pluto.mp3
https://image.tingclass.net/statics/js/2012
The Heart of Pluto

Icy Outer Limits

The New Horizon spacecraft made it to Pluto and it only took nine years to get there!

Pluto is over 4.5 billion miles from Earth. Even with a speed of 39,000 miles per hour, it still takes a long time to travel that far. But it was worth the long wait.

Photos taken by the spacecraft capture the heart Pluto.

科學(xué)一刻 冥王星之心

Pluto's heart-shaped region is solid ice made up of nitrogen, methane and carbon monoxide.

What looks like a heart-shaped area in Pluto’s Sputnik Planum region is really ice. The area measures about a thousand miles across (about the the size of Texas). And it’s not water ice. It’s made up of nitrogen, methane and carbon monoxide. The carbon monoxide is thickest in the whiter areas of the heart.

Gas or Liquid Matter?

Though gasses on Earth, nitrogen, methane and carbon monoxide are solids on Pluto.

Being so very far from the sun, Pluto is a super cold place. The gases remain frozen, but not permanent. High resolution photos suggest that Pluto’s ice may have moved recently, like glaciers here on Earth. That means there has been some geological activity, at least within the last 100 million years. The ice also has dark streaks that are a few miles long. These are aligned in the same direction and may have been produced by winds blowing across the surface.

Pluto also has an atmosphere that extends about 80 miles above the surface.

So, Pluto isn’t just a dead rock like our moon. It appears to be geologically active, like a planet. But that’s a discussion for another day.

用戶搜索

瘋狂英語 英語語法 新概念英語 走遍美國(guó) 四級(jí)聽力 英語音標(biāo) 英語入門 發(fā)音 美語 四級(jí) 新東方 七年級(jí) 賴世雄 zero是什么意思武漢市葛洲壩世紀(jì)花園二期英語學(xué)習(xí)交流群

網(wǎng)站推薦

英語翻譯英語應(yīng)急口語8000句聽歌學(xué)英語英語學(xué)習(xí)方法

  • 頻道推薦
  • |
  • 全站推薦
  • 推薦下載
  • 網(wǎng)站推薦