首页
登录
职称英语
Officials at the White House announced a new space policy focused on managing
Officials at the White House announced a new space policy focused on managing
游客
2023-08-08
32
管理
问题
Officials at the White House announced a new space policy focused on managing the increasing number of satellites that companies and governments are launching into space. Space Policy Directive-3 lays out general guidelines for the United States to mitigate (缓解) the effects of space debris and track and manage traffic in space.
This policy sets the stage for the Department of Commerce to take over the management of traffic in space. The department will make sure that newly launched satellites don’t use radio frequencies that would interfere with existing satellites, and schedule when such new satellites can be launched. This only applies to American space activities, but the hope is that it will help standardize a set of norms in the dawning commercial spaceflight industry throughout the world.
Space, especially the space directly around our planet, is getting more crowded as more governments and companies launch satellites. One impetus for the policy is that companies are already starting to build massive constellations (星座), comprising hundreds or thousands of satellites with many moving parts among them. With so much stuff in space, and a limited area around our planet, the government wants to reduce the chances of a collision. Two or more satellites slamming into each other could create many more out-of-control bits that would pose even more hazards to the growing collection of satellites in space.
And it’s not like this hasn’t happened before. In 2009 an old Russian craft slammed into a communications satellite, creating a cloud of hundreds of pieces of debris and putting other hardware at risk. Journalist Sarah Scoles reports that NASA currently tracks about 24,000 objects in space, and in 2016 the Air Force had to issue 3,995,874 warnings to satellite owners alerting them to a potential nearby threat from another satellite or bit of debris.
That’s why this new policy also includes directions to update the current U. S. Government Orbital Debris Mitigation Standard Practices, which already require any entity that launches a satellite or spacecraft io vigorously analyze the likelihood that any of their actions, from an unexpected failure or normal operations, will create more space debris. It includes accounting for any piece of debris they plan to release over 5mm that might stay in orbit for 25 years or more. It might seem surprising to think about an item staying in space for that long, but the oldest satellite still in orbit—Vanguard 1—turned 60 in 2018.
Agencies and companies throughout the world are working on developing technology that would dispose of or capture space debris before it causes serious damage. But for now, the U.S. government is more focused on preventing new debris from forming than taking the trash out of orbit. [br] What is the purpose of the new U. S. space policy?
选项
A、To lay out general guidelines for space exploration.
B、To encourage companies to join in space programs.
C、To make the best use of satellites in space.
D、To improve traffic conditions in space.
答案
D
解析
推理判断题 。定位句指出,美国新的太空政策,即“太空政策3号指令”,为美国缓解太空碎片的影响以及跟踪和管理太空交通清楚地解释了一般指导原则。第二段第一句也提到,这一政策为美国商务部接手太空交通管理奠定了基础,故答案为D)。
转载请注明原文地址:https://tihaiku.com/zcyy/2909138.html
相关试题推荐
America’smostpopularnewspaperwebsitetodayannouncedthattheeraoffre
America’smostpopularnewspaperwebsitetodayannouncedthattheeraoffre
America’smostpopularnewspaperwebsitetodayannouncedthattheeraoffre
America’smostpopularnewspaperwebsitetodayannouncedthattheeraoffre
America’smostpopularnewspaperwebsitetodayannouncedthattheeraoffre
America’smostpopularnewspaperwebsitetodayannouncedthattheeraoffre
America’smostpopularnewspaperwebsitetodayannouncedthattheeraoffre
FrustratedwithdelaysinSacramento,BayAreaofficialssaidThursdaythey
FrustratedwithdelaysinSacramento,BayAreaofficialssaidThursdaythey
国策statepolicy
随机试题
Thetrainclatteredoverpointsandpassedthroughastation.Thenitbegan
WhatwasFrankdoingatthebeginningoftheconversation?[originaltext]W:Hi,
阅读下面材料,分析内在的层进关系,列出体现层进关系的论证提纲。 为人类寻求光明
调节倒凹法的就位道是A.两侧基牙长轴延长线的平分线为就位道 B.通过模型倾斜把
股权投资基金备案材料完备且符合要求的,基金业协会应当自收齐备案材料之日起()个
Thechangeinthatvillagewasmiraculou
当一部小说赢得大奖之后,它在网上书店的口碑却往往会变差。但实际上,大赛评比中其他
根据《风景名胜区条例》的规定,有关单位或者个人对责令限期拆除风景名胜区内违法建设
患者,男,64岁,空腹血糖8.9mmol/L,餐后2小时血糖14.8mmol/L
(2021年真题)自动化系统中,能将湿度、温度等非电量的物理量参数转换成电量参数
最新回复
(
0
)