Experts: China's eye in the sky first goal rather than extraterrestrial civilizations | pulsar is pulsar | | extraterrestrial civilizations _ the eyes of China News
China's "eye in the sky". Generation photography Pingtang County propaganda Office for diagram

CNS,, November 6 (reporter Song Yusheng)-in September, known as China's "eye in the sky" 500-meter aperture spherical telescope (FAST) completed in Guizhou. Among them, the goal of FAST Search for extraterrestrial civilizations is quite noticeable. The main task of the search for extraterrestrial civilizations are FAST? FAST built or what? Recently, two experts gave the answer.

FAST General technologist Wang Qiming said in the scientific goals of FAST, "including the search for extraterrestrial civilizations", "but this is not ranked in the forefront of the goals". "Row in the forefront of our goal is to search for pulsars. "He said.

Reporters noted, pingtang introduces the International House of pulsar astronomy experience. Information displayed in the Pavilion, the pulsar is a rapidly rotating neutron star, it can emit a strictly periodic pulse signal. Pulsar observations not only has an important physical meaning, but of great value in the time scale, deep space autonomous navigation and other important applications.

Why looking for pulsars? Wang Qiming said pulsar is constantly sending pulse signals, and this signal is very stable. "When they can apply to the exploration of deep space, Star Trek, you can play a role in navigation. ”

For example, he said, "If you have to go to Mars, or out of the solar system, or even out of the Milky Way Galaxy, impossible for the GPS navigation on Earth, but if you know the location of many pulsars in the universe, you can use it to positioning, navigation. ”

He also noted that aerospace precision positioning which radio telescope. "If we launch spacecraft to Mars, the spacecraft went from time to time in the course of a pulse came back, our China ' eye in the sky ' can receive the signal and determine its location is on the right track. ”

China's "eye in the sky" at night. Pingtang County propaganda Office for diagram

In addition, Guizhou University, school of physics, Professor, national astronomical observatories, Chinese Academy of Sciences-Guizhou University Joint Research Center for astronomy Zhang Zhibin, Deputy Director, told reporters that human beings in laboratories on the ground, strong magnetic field of high temperature and high pressure are very difficult to achieve, and pulsar's extreme experimental conditions, which "some physical phenomena to human knowledge under extreme conditions also have great significance."

National astronomical observatories Deputy Director, FAST engineering Deputy Manager Zheng Xiaonian said in a media interview that, in addition to the observation of pulsars, China's "eye in the sky" is another scientific objective of "inspection of the neutral hydrogen in the universe". He pointed out that this "study of the largest-scale physics, to explore the origin and evolution of the universe." (End)

Responsible editor: Li Peng

Article keywords:
Pulsar extraterrestrial civilizations China eye in the sky

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专家:中国天眼首要目标是脉冲星 而非外星文明|脉冲星|中国天眼|外星文明_新闻资讯
中国“天眼”。代传付摄 平塘县外宣办供图

　　中新网黔南11月6日电（记者 宋宇晟）今年9月，被誉为中国“天眼”的500米口径球面射电望远镜（FAST）在贵州落成。其中，FAST寻找地外文明的目标颇为引人注目。寻找外星文明是否是FAST的主要任务？FAST的建成还有何作用？近日，两位专家给出了答案。

　　FAST总工艺师王启明表示，在FAST的科学目标中，确实“包括寻找地外文明”，“但是这并不是我们排在最前列的目标”。“排在我们最前列的目标是寻找脉冲星。”他说。

　　记者注意到，平塘国际天文体验馆对脉冲星进行了介绍。馆内资料显示，脉冲星是快速自转的中子星，它能够发射严格周期性脉冲信号。脉冲星的观测研究不仅具有重要的物理意义，而且具有重要应用价值，在时间尺度、深空自主导航等方面具有重要的应用前景。

　　为什么要找脉冲星？王启明说，脉冲星会不断地发出脉冲信号，而这种信号非常稳定。“找到以后就可以应用于深空探测、星际旅行，可以起到导航作用。”

　　他举例称，“如果你要走到火星，或者走出太阳系，甚至走出银河系，根本无法用地球上的GPS去导航，但如果能知道宇宙中很多脉冲星的位置，就可以通过它来定位、导航。”

　　他还指出，航天航空的精确定位也离不开射电望远镜。“如果我们发射飞船去火星，飞船在走的过程中隔一段时间就发一个脉冲信号回来，我们的中国‘天眼’就可以接收到这个信号，判断它的位置，是否在正确轨道上。”

中国“天眼”夜景。平塘县外宣办供图

　　此外，贵州大学物理学院教授、中科院国家天文台-贵州大学天文联合研究中心常务副主任张志彬也告诉记者，人类在地面建实验室，高温高压强磁场都是很难实现的，而脉冲星的实验条件非常极端，它“对人类认识极端条件下的一些物理现象也有非常重大的意义”。

　　国家天文台副台长、FAST工程常务副经理郑晓年曾在接受媒体采访时指出，除了观测脉冲星，中国“天眼”的另一大科学目标是“巡视宇宙中的中性氢”。他指出，这可以“研究宇宙大尺度物理学，以探索宇宙起源和演化”。（完）

责任编辑：李鹏

文章关键词：
脉冲星 中国天眼 外星文明

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