Scientists will send a miniature spacecraft fleet to study asteroids

<Ava_treted_vn_tvn_tvn_tvn_tv_tv //p.ivideo.sina.com.cn/video/251/670/875/251670875_400_300.jpg',// video program thumbUrl: 'http://p.ivideo.sina.com.cn/video/251 /670/875/251670875_400_300.jpg',//html5 The video on the player has not yet started to show the picture, can be the same as the pic title: 'Scientists will send a miniature spacecraft fleet research asteroid', // title source: ', // video release source. Such as: Xinhua Network. url: 'http://video.sina.com.cn/view/251670875.html'}]}; $ widgetadd ({id: 'pl_video_2', loadTime: 'DOMContentLoaded', // initialize: true, require: 'plsplayList.init (node, widget)}}; Earlier this year, a well-known astrophysicist warned that the next asteroid impact could occur at any time because of the thousands of objects around the Earth that could pose a threat to us, so the study of asteroids was Time race. According to foreign media reports, a recent study, said a miniature spacecraft composed of space fleet will visit 300 asteroids, to study their behavior. The fleet will contain 50 spacecraft using electric sun sail as a booster. They will take asteroid photos and collect their ingredient data. Earlier this year, a well-known astrophysicist warned that the next asteroid impact could occur at any time because the earth was surrounded by thousands of celestial bodies that could pose a threat to us, The study is undoubtedly racing with time. 今年年初,一位知名天体物理学家警告称,由于地球周围围绕着数千颗可能对我们造成威胁的天体,下一次小行星撞击随时有可能发生,因此对小行星的研究无疑是与时间赛跑。

These miniature spacecraft will record the size and shape of the asteroid, as well as the location of the crater or dust on the surface. Each miniature spacecraft will be equipped with a 4 cm long telescope, with a resolution of 100 meters shooting asteroid surface. Each spacecraft will visit six or seven asteroids, and then return to Earth to transfer data.

<a small number of asteroids, and so far we have seen only a few asteroids near the Earth. "The main author of the study, Dr. Peka Janu Ning of the Finnish Institute of Meteorology (Pekka Janhunen) pointed out. "In order to better understand them, we need to examine a large number of asteroids in space, the only viable way is to send micro-spacecraft."

NASA is currently tracking 1400 “potentially dangerous asteroid “And predict their future trajectory and impact probability.

The threats we face should not be overlooked. Former Chinese astronaut Lu Jie (Ed Lu) said that human beings have not suffered a major impact is purely lucky.

“These asteroids do have a major threat to the Earth,” Dr. Yang said.

The spacecraft main body is equipped with an electronic transmitter and high voltage power supply. The supports at the end of the spacecraft can generate thrust by slow rotation. These micro-spacecraft will analyze the target asteroid at about 1,000 kilometers and use the infrared light to analyze the mineral composition of the asteroid during the three-year study period. These micro-spacecraft will analyze the target asteroid at about 1,000 kilometers and use the infrared light to analyze the mineral composition of the asteroid during the three-year study period. “The miniature spacecraft will gather a lot of information in the task, including the size and shape of the asteroid, whether there is a crater or dust on the surface, whether it has a satellite, etc.” Dr. Yang Huaining explained. Will collect the chemical composition of the asteroid surface data, such as whether there are signs of water, etc. “

they will use electric sun sailsFlying, using the solar wind (the sun releases the charged particle flow) produces enough propulsion without the use of boosters. The spacecraft main body is equipped with an electronic transmitter and high voltage power supply. The supports at the end of the spacecraft can generate thrust by slow rotation. The bolt is rotated every 50 minutes and a wide, shallow conical shape is drawn around the mass center near the main body of the spacecraft. By changing the direction of the relative solar wind, the spacecraft can change the thrust and forward direction.

Electric sun sails are not big thrust. But the results show that with the initial thrust of the launch, which is enough spacecraft in 3.2 years to go with the asteroid belt with the Earth. 航天器主体装有一台电子发射器和高压电源。连在航天器末端的栓绳可通过缓慢转动产生推力。 这些微型航天器将在约1000公里处对目标小行星展开分析,并在为时三年的研究期间,利用红外光分析小行星的矿物质组成。 Miniature spacecraft can not install large antennas, so they eventually have to fly over the earth in order to download the data.

The whole task will cost 60 million euros (about 470 million yuan), including the initial launch costs, the late visit to a small planet about 200,000 euros (about 1.57 million yuan). “With micro-spacecraft and a new propeller, it takes a few hundred thousand euros to explore a small asteroid, but the scientific data collected is of great value.” Dr. Yang said.

The rope is rotated every 50 minutes and a wide, shallow conical shape is drawn around the mass center near the main body of the spacecraft. Alan Fitzsimmons of the Queen’s University Belfast Astrophysics Research Center says that as we find the asteroid growing, the question now is not whether the asteroid will hit the earth, and When will it hit the earth?

Unprotected asteroid impact can easily destroy a big city, if the asteroid is large enough, and may even lead to human extinction.

“We have found more than 1,800 dangerous objects, and more have not yet been found,” said Dr. Fitz Simon.

In January of this year, a small planet with ten floors so far from the Earth pass by, just half a distance away from us. (Leaves)

Article By :

Leave a Reply

Your email address will not be published. Required fields are marked *