综合一区欧美国产,99国产麻豆免费精品,九九精品黄色录像,亚洲激情青青草,久久亚洲熟妇熟,中文字幕av在线播放,国产一区二区卡,九九久久国产精品,久久精品视频免费

  .contact us |.about us
News > National News...
Search:
    Advertisement
Thick clouds obscure meteor shower in Beijing
( 2003-11-14 21:53) (Xinhua)

Cloudy skies disappointed many Beijing stargazers braving winter chills and night wind to see the Leonid Meteor Shower (LMS), which was expected to occur before daybreak Friday.

According to astronomers, shooting stars would be seen shortly after the comet called Tempel-Tuttle moves closer to the sun as part of the low-temperature comet breaks into pieces under the heat from the sun.

The meteors would move at the speed of thousands of kilometers per second, and such an amount of kinetic energy turns into enormous heat and emits glaring light when it enters the atmosphere and becomes ionized.

People in Beijing were expected to see about 100 shooting stars an hour if the sky was clear, according to their prediction.

Since Thursday evening, however, clouds have gradually shadowed the sky and many stargazers had to give up their date with the shooting stars.

The LMS will occur again around 8:00 a.m. on Nov. 19, when the day will have already broken in most areas of China and it is impossible to see the shooting stars.

Leonid meteors form in the dust debris of the Tempel-Tuttle comet's tail which orbits the sun every 33 years. The earth crosses the tail every November, and meteor showers occur when the debris is particularly dense.

According to Chinese historical records, meteor showers from the Lyra Comet were witnessed as early as 687 BC.

 
Close  
   
  Today's Top News   Top National News
   
+Chinese, Indian navies take to the water
( 2003-11-13)
+Gas explosion kills 48 miners in east China
( 2003-11-14)
+China, Japan handle 724 chemical bombs
( 2003-11-14)
+Beijing calls for direct air link during festival
( 2003-11-14)
+Deals on US goods cut trade imbalance
( 2003-11-13)
+Eleven missing miners unlikely to survive
( 2003-11-14)
+Thick clouds obscure meteor shower in Beijing
( 2003-11-14)
+Natural disasters cost China US$22.7b in 2003
( 2003-11-14)
+China trains space-related professionals from 17 countries
( 2003-11-14)
+Anti-AIDS Chinese medicine expected to enter market this year
( 2003-11-14)
   
  Go to Another Section  
     
 
 
     
  Article Tools  
     
   
     
   
        .contact us |.about us
  Copyright By chinadaily.com.cn. All rights reserved  
  • 建始县| 兰西县| 本溪| 青海省| 柘城县| 西华县| 婺源县| 古蔺县| 临朐县| 平乡县| 五寨县| 永兴县| 泽普县| 和田市| 镇江市| 喀喇沁旗| 驻马店市| 崇明县| 莲花县| 湘乡市| 沈阳市| 兴安盟| 达孜县| 庐江县| 五河县| 和田市| 望江县| 镇原县| 龙游县| 措美县| 苏尼特右旗| 西乌珠穆沁旗| 怀来县| 通州区| 青冈县| 郓城县| 紫云| 亳州市| 鄂托克旗| 镇坪县| 昌江|