best news! heaven is nuking Earthman 20X Hiroshima bomb power and up, actually no limits! GVGT!

[tun_dr_m]

https://www.rt.com/news/458196-asteroid-earth-tools-save-earth/


From nuclear warheads to gravity tractors, how well are we prepared for an impending asteroid?
Published time: 2 May, 2019 12:33 Edited time: 2 May, 2019 12:37
Get short URL

Artist's conception shows an asteroid crashing into Earth in an event © STR New / Reuters

• 
  
• 
  
• 
  
• 
  
• 
  

NASA launches an asteroid strike simulation this week, but what would happen if a devastating asteroid was coming our way today? RT asks an expert about the tools available, and how long it will be until we’re fully prepared.
While hundreds of small asteroids and meteorites have hit Earth, big objects, like the 55 foot one that exploded over Chelyabinsk, Russia in 2013 only occur around twice a century, and larger (dinosaur-destroying) ones are even less common. However, NASA warns that “given the current incompleteness of the NEO [Near Earth Object] catalogue, an unpredicted impact could occur at any time.”

At the start of 2019, NASA reported there were 19,000 known near-Earth asteroids, with an average of 30 new ones found each week.
Detlef Koschny, co-manager of the Space Situational Awareness (SSA)-NEO Segment of the European Space Agency, told RT that it’s not the large NEOs that we need to worry about, though, but the smaller ones, as scientists are only aware of “one percent or less” of them and “they could still damage a city or region.”
Ideally, scientists hope to have several years’ warning of an approaching NEO of 100 meters or more, but when it comes to smaller ones, it is “more difficult to see them early on,” Koschny explains.
Offensive defense
“Anything larger than 50 meters we’d try to deflect,” Koschny said, pointing to NASA’s 2022 Double Asteroid Redirection Test (DART), which aims to intercept an asteroid’s moonlet when it gets within 11 million kilometers of Earth. The hope is that it can “change the speed of an asteroid via a kinetic impact,” he explained.
Unfortunately, deflection methods require a few years of preparation, and the correct spacecraft would need to be built.

Double Asteroid Redirection Test (DART) Mission © NASA
The White House Office of Science and Technology Policy released a 2018 report outlining a 10 year plan to prevent asteroids from hitting Earth. It involves creating modeling tools and simulations to characterize risks, planning reconnaissance missions and developing technologies for fast-response missions to deflect or disrupt hazardous NEOs.
In Europe, NEOShield carries out research and development to reduce the risk of a NEO deflection mission failing, and has outlined several methods to prevent a NEO causing damage.
One proposal is a ‘gravity tractor’, which involves positioning a heavy satellite close to an asteroid which then “pulls the asteroid away.” It’s a good method, Koschny said, as scientists already know they can get satellites close to asteroids. However, this kind of mission “takes a long time, around 10 years.”

Meanwhile, using an “ion engine to push an asteroid away,” as has also been tabled “takes several years,” and there are “still some technical issues to understand,” he noted.
At the most extreme end of the intervention scale is a nuclear explosion, in which scientists would detonate a warhead right beside an asteroid so that the space rock’s surface is “super-heated and vaporized.” This vapor pressure then acts like rocket fuel to move the asteroid and is “the most effective method,” Koschny said.
However, it clearly has its disadvantages. “Politically, it’s not accepted, because of the risk of radioactive contamination” that could occur if the launcher failed or something went wrong.
Also on rt.com Key to the mystery of life? 3.5mn yo comet found inside meteorite could reveal solar system secrets
Standard explosives could also be used to shift the asteroid from its doom-bearing path, and another method involves embedding an explosive inside an asteroid (like the Hollywood movie Armageddon) and then blowing it up.
Asked how long it will be before we are fully prepared to prevent any asteroid from hitting Earth, Kosny said, “If we continue taking the subject seriously, we’ll be there in 10 to 20 years for objects up to a few hundred meters in size.” Let’s just hope no surprise asteroids come our way before then.
Think your friends would be interested? Share this story!

 

[tun_dr_m]

There are theories earth's moon was form by some other space objects strongly hit planet earth and broken a part off the planet earth, which became our moon. It was a broken away portion originally part of our planet earth! The Mars by it size weight and orbit was though to be the BIG SUSPECT which struck earth and broke away the moon-chunk off from earth.

 

[greedy and cunning]

angmo talking cock again
as if they are very concern of the welfare of human beings.
if earth not destroy by some asteroids
it will be destroyed by man himself.

Albert Einstein said
“Only two things are infinite, the universe and human stupidity,
and I’m not sure about the former.”


The most powerful force in the universe is compound interest
Compound interest is the greatest mathematical discovery of all time

 

[nightsafari]

why worry? according to China, it's no big deal.

 

[Ang4MohTrump]

http://www.sohu.com/a/311570749_619988

美高官对俄发出罕见正式警告，多国已做好准备，一件大事或将发生

2019-05-03 11:56 导弹 /美国 /俄罗斯

近日，在美国的马里兰州，多名美国导弹专家、火箭专家，以及美国家航天局的科研人员齐聚一堂，召开了一场特别会议，在这场特别会议上，美国家航空航天局局长吉姆·布里登斯廷，罕见的对俄罗斯发出了一条正式警告。

但是，这次由美国高官亲口对俄罗斯发出的“严厉警告”，某种程度上来说，是出于相当的“善意”。

这次会议的主办方名为“行星防御协会”，名头可谓不小，不过他们要“防御”的对象倒不是外星怪物，而是没有生命的死物——陨石。

可能是在NASA工作的这几年没少受科学气氛的熏陶，在发言中，吉姆·布里登斯廷一改当年连“全球变暖”都一知半解的科技“门外汉”模样，以过去多次陨石撞击地球事件为例，分析了再次发生撞击事件的概率，并对此表达了深刻的担忧，并拿出2013年发生在俄罗斯的车里雅宾斯克小行星撞击事件举例，警告称“这种事件极有可能会再次重演”。

当时，一颗直径约17米的陨石从俄罗斯上空进入地球大气层，这颗陨石在大气层中烧出了一团明亮的火球，产生的冲击波令不少建筑受损，有1500人不同程度受伤，据NASA专家估计，最后这颗陨石在撞击地面时，释放了约为50万吨TNT当量的能量。

由于俄罗斯拥有全球最多的地表面积，其遭遇陨石事件的次数也居全球之冠，NASA局长对俄罗斯发出的这条警告不无道理。

当然，车里雅宾斯克陨石还是陨石里的“小个子”，如果有更大的陨石撞击地面，将会是一件足以改变人类历史的大事，而根据NASA的观测数据，此种事件很有可能发生——名列“潜在危险小行星和彗星”的小天体已经有1310余颗。

而世界各国的科学家们也已经为此展开了准备，各类对近地小行星进行拦截的方式层出不穷，尽管小行星撞击可能并不是各国眼前的威胁，但这些拦截小行星的手段，也可用于另一裨益无穷的事业——对太空垃圾的清扫工作。

「注：本文部分图片来源于网络！文章未经授权禁止转载！关注我们，每天阅读更多精彩内容」返回搜狐，查看更多



声明：该文观点仅代表作者本人，搜狐号系信息发布平台，搜狐仅提供信息存储空间服务。



US high officials issued a rare formal warning to Russia, many countries are ready, a major event will happen
2019-05-03 11:56 missile /United States /Russia

Recently, in Maryland, many US missile experts, rocket experts, and researchers from the US Space Agency gathered together to hold a special meeting. At this special meeting, the American Aerospace Agency Director Jim · Bridenstin, a rare official warning issued to Russia.

However, this time, the "severe warning" issued by the US senior officials to Russia was, to a certain extent, due to considerable "goodwill."

The organizer of this conference is called "Planet Defense Association", and the name is not small, but the object they want to "defend" is not an alien monster, but a dead object without life - meteorite.

It may be that in the past few years of working at NASA, there has not been a lack of scientific atmosphere. In the speech, Jim Bridenstin changed the appearance of the "outs-and-door" technology that was completely ignorant of "global warming" in the past. Taking the meteorite impact on the Earth as an example, it analyzes the probability of a recurring impact event and expresses deep concern about it. It also gives an example of the Chelyabinsk asteroid impact event in Russia in 2013, warning that “this kind of The event is very likely to repeat itself again."

At that time, a meteorite with a diameter of about 17 meters entered the Earth's atmosphere from above Russia. This meteorite burned a bright fireball in the atmosphere. The shock wave caused many buildings to be damaged, and 1,500 people were injured to varying degrees. NASA experts estimate that the last meteorite released about 500,000 tons of TNT equivalent energy when it hit the ground.

Since Russia has the largest surface area in the world, and its number of encounters with meteorites is also the highest in the world, the warning issued by NASA to Russia is not unreasonable.

Of course, the Chelyabinsk meteorite is still a "small man" in the rock. If there is a larger meteorite hitting the ground, it will be a big event that can change the history of mankind. According to NASA observations, such an event is very good. It may happen that there are more than 1,310 small objects in the list of "potentially dangerous asteroids and comets."

Scientists from all over the world have already prepared for this. Various methods of intercepting near-Earth asteroids emerge in an endless stream. Although asteroid collisions may not be a threat to all countries, these means of intercepting asteroids can also be used. Another endless business - cleaning up space junk.

"Note: Some of the images in this article are from the Internet! Articles are forbidden to reprint without authorization! Follow us and read more exciting content every day" Back to Sohu, see more

Disclaimer: This article only represents the author himself, Sohu is the information publishing platform, and Sohu only provides information storage space services.

 

[syed putra]

The moon was there since the begining. Otherwise how to tell which month to begin fasting.

 

[tun_dr_m]

http://www.sohu.com/a/311574500_428290?spm=smpc.home.top-news5.1.1556884327498Nq3q0zl




央视网
15万文章 144亿总阅读
查看TA的文章>


304

• 分享到

小行星将与地球“相撞”？科研人员正为“邂逅”作准备

2019-05-03 12:42

央视网消息：美国航天局喷气推进实验室4月29号说，一颗名为阿波菲斯的小行星10年后将以与地球最近3.1万公里的距离“擦肩而过”。

测算表明，它撞击地球的可能性非常小，发生概率不到十万分之一。目前，多国科研人员正在为迎接这一“邂逅”作准备。

第六届国际宇航科学院行星防御会议于当地时间4月29号至5月3号在美国马里兰州举行，会上科研人员围绕如何观测10年后与阿波菲斯小行星的“邂逅”展开讨论，包括地球引力将如何影响小行星飞越、能否利用阿波菲斯了解小行星内核、是否应该向阿波菲斯发送航天器等。相关机构还共同举行“桌面演练”，模拟小行星撞击地球的情景，开展防御应对。

阿波菲斯小行星最初发现于2004年6月，是目前已知的约2000个与地球距离较近、存在“潜在危险”的小行星之一。据美国喷气推进实验室介绍，2029年4月13号，阿波菲斯将首先在南半球夜空出现，先后飞越澳大利亚、印度洋、赤道、非洲，最后越过大西洋。

美国航天局指出，阿波菲斯直径约340米，体积这么大的小行星如此近距离“邂逅”地球很少见，此前科学家发现的近距离飞越地球的小行星直径都在5至10米之间。




304


share to




Will the asteroids "collide" with the Earth? Researchers are preparing for "邂逅"

2019-05-03 12:42


CCTV News: NASA's Jet Propulsion Laboratory said on April 29 that an asteroid named Apophis would "pass by" the distance of the nearest 31,000 kilometers from Earth 10 years later.




The calculations show that it is very unlikely to hit the Earth, and the probability of occurrence is less than one in 100,000. At present, many national researchers are preparing for this "deaf".


The 6th International Academy of Astronautics Planetary Defense Conference was held in Maryland, USA from April 29th to May 3rd. At the meeting, researchers discussed how to observe the "邂逅" of Apophis asteroids after 10 years of observation. Including how the gravity of the Earth will affect the asteroid's flight, whether it can use Apophis to understand the asteroid core, whether it should send a spacecraft to Apophis. Relevant agencies also jointly held a “desktop exercise” to simulate the asteroid impact on the Earth and carry out a defense response.


The Apophis asteroid was first discovered in June 2004 and is one of the approximately 2,000 asteroids known to be “potentially dangerous”. According to the US Jet Propulsion Laboratory, on April 13, 2029, Apophis will first appear in the southern hemisphere night sky, flying over Australia, the Indian Ocean, the equator, Africa, and finally across the Atlantic.


NASA pointed out that Apophis is about 340 meters in diameter. It is rare for such a large asteroid to be so close to the Earth. Scientists have discovered that asteroids flying close to the Earth at a close distance are between 5 and 10 meters in diameter. .

 

[tun_dr_m]