| 查看: 457 | 回复: 4 | |||
[交流]
Everyday News-Place Your Bets on the Falling Satellite!
|
Sometime on Friday, a 6.5-ton satellite the length of a small bus will plunge back to Earth. Deployed from the space shuttle Discovery in September 1991 and decommissioned in December 2005, the Upper Atmosphere Research Satellite (artist's concept in image) measured chemical compounds found in the ozone layer, wind and temperature in the stratosphere, and energy streaming from the sun. According to NASA analyses, as many as 26 components weighing a total of 532 kilograms could survive reentry and strike Earth at scattered sites from 500 kilometers to nearly 1300 kilometers downrange of where the satellite first enters the atmosphere. Potential crash sites lie anywhere between 57° N (about the latitude of Sitka, Alaska, and Aberdeen, Scotland) and 57° S (a little more than 100 kilometers south of the southern tip of South America). Because Ireland lies beneath the flight path of the satellite, bookmakers there are getting in on the action: the most likely spot for the craft to crash is the Pacific Ocean, but odds are about 66-to-1 that any space debris lands on the Emerald Isle. If any pieces strike land, the most likely continents to be slammed are Africa (9-to-4 odds) and South America (11-to-4 odds), both of which lie fully within the danger zone. Because significant swaths of Asia and North America lie outside the danger zone, odds of debris landing there are lower, at 3-to-1. |
回复此楼» 猜你喜欢
实验室接单子
已经有4人回复
-
全日制（定向）博士
已经有4人回复
-
假如你的研究生提出不合理要求
已经有6人回复
-
对氯苯硼酸纯化
已经有3人回复
-
求助:我三月中下旬出站，青基依托单位怎么办？
已经有12人回复
-
不自信的我
已经有12人回复
-
所感
已经有4人回复
-
论文终于录用啦！满足毕业条件了
已经有28人回复
-
要不要辞职读博？
已经有7人回复
-
北核录用
已经有3人回复
★
小木虫(沙发+1，金币+0.5):恭喜抢个沙发，再给个红包
小木虫(沙发+1，金币+0.5):恭喜抢个沙发，再给个红包
 |
2楼2011-09-23 22:21:07
★
小木虫(金币+0.2):抢了个小板凳，给个红包
小木虫(金币+0.2):抢了个小板凳，给个红包
 |
3楼2011-09-23 22:21:15
4楼2011-09-23 22:23:29
5楼2011-09-23 22:24:10