A scientist was called Na Rendong once upon a time, he ever had said a such words " in my eye, knowledge does not have national boundaries, but the country should have knowledge. " then he is chaired made Chinese day key point. Chinese weather eye calls 500 meters of caliber spherical radio telescope again, abbreviation calls FAST. Its occurrence was surmounted almost full rank world second Puerto Rico the Aleixibo of 300 meters of caliber is nearly one times more telescopic.
Since FAST after beginning to start, discovered two pulsar on October 10, 2017, distance earth is made an appointment with respectively 4100 light-year and 16 thousand light-year, this also is the first time on history of Chinese radio telescope discovers pulsar. Subsequently in December 2017, china discovered 3 pulsar again, till right now China had discovered 9 pulsar in all.
FAST is different from common binoculars, it is not to pass " look " those who discover a cause, pass however " listen " discover a cause. FAST accepts information thereby through accepting the radio wave in the universe, but when these radio wave travel the world, already was very special weak, the signal that caliber accepts greatly more is more also. Theoretic tell, FAST can accept the signal beyond 13.7 billion light-year, this distance had been close to the brim with the universe.
Just about accordingly, before paragraph the doubtful universe signal that time FAST received to be located in 1300 light-year to control, this universe signal and common pulsar are distinguished somewhat, but unusual appearance resembles, the distance of 1300 light-year leaves us not far actually, the diameter of the galaxy has 100 thousand light-year. So famous scientist Hocking also is to express, to the universe medium signal does not reply easily, probable it is the signal that the position for him conceal pretends the civilization outside the ground to be given out into pulsar thereby.
