Wang Sichao, a researcher and planetary astronomer at the Purple Hills Observatory of the Chinese Academy of Sciences, said that he believes extraterrestrial beings do exist and their UFOs have the ability to visit our earth. However, he disagrees with British scientist Stephen Hawking, who believes an encounter with aliens would spell disaster to human beings.



Wang has done the astronomical observation work for 39 years and he publicized his opinion on a science forum held in Guangzhou today.



Wang also found that in the terrestrial space between the height of 130 kilometers and 1,500 kilometers, UFOs have appeared many times. Their flying speed is much slower than the first cosmic velocity. Some are even as slow as 0.29 kilometers per second and they can fly in the 1,460 kilometers' height for more than 25 minutes.



This means UFOs have the anti-gravity ability. Otherwise, they would fall soon. Wang came to these conclusions based on the spherical astronomy and physics method and his years of observation at Purple Hills Observatory as well as the quantitative analysis of some significant UFO events.



Many people are worried that the aliens would invade the earth and if they do exit, is could be a calamity for human beings. Hawking is one person who holds such a theory.



However, Wang said it's too early to come to this conclusion.



"If they are friendly to us, we can promote the human beings' civilization through exchange and cooperation with them. If they are not, as long as we prepared for their invasion, we can beat them back based on their weaknesses. After all, they are life entities, they would show their slips," Wang said.



By Wang Qianyuanxue, People's Daily Online

