At 21:00 on April 10, the first photograph of a black hole appeared in human history. Press conferences were held in Washington, China, Shanghai and Taipei, Santiago, Chile, Brussels, Belgium, Lingbi, Denmark and Tokyo, Japan, and black hole photos were released simultaneously.
NASA found that the two black hole systems danced intimately 3.8 billion light-years away.
In an interview with Red Star News, Dr. Gou Lijun, a researcher at the National Astronomical Observatory of the Chinese Academy of Sciences and executive editor of the Chinese National Astronomy, said: Although the black hole was directly photographed, in fact, the motion characteristics of some luminescent materials around the black hole were photographed. Because the black hole itself does not emit light, we can only foil its existence by photographing some luminous materials very close to it.
Goulijun (according to the official Wechat No. of the National Observatory of the Chinese Academy of Sciences)
On the significance of this picture, Goulijun said: Although the black hole theory was born as early as 1916, in the past 100 years, human beings have never seen very intuitive black hole photos. Until then, scientists have used indirect methods to prove the existence of black holes. In addition, many computers have simulated the scene around the black hole. But this is the first time people can visually see the existence of a black thing in the universe, which is the black hole we have been predicting. With further refinement of future observations, it is possible to help us solve more puzzles. For example, how matter moves around a black hole and how jet phenomena occur.
Goulijun believes that data collection should be the most important and arduous task for scientists in the two years from April 2017 to the present. Telescopes in eight different parts of the world are too large, Goulijun said. Every night there are almost two PBs of information (one PB contains about 50% of the information in all academic research libraries in the United States). After the observation, the researchers sent the data to two different data centers, one at MIT and the other at Map Radio in Germany.
Goulijun told Red Star News: Another problem is the long waiting time. Especially the telescope in Antarctica, which is observed in the winter of Antarctica, is in the state of extreme night. Researchers have to wait until the beginning of the polar day before flying to Antarctica to copy the data. In Antarctica, we dont have fibre optic cables to transmit data. It is very difficult to transmit data by satellites in the sky, because the number of satellites over Antarctica is very small and their transmission speed is very limited.
However, even when human beings photograph black holes, it is impossible to know exactly what is inside them. Goulijun said: There are many different opinions about what is inside a black hole, but they cant prove who is right or who is wrong. In order to study what is inside a black hole, we need to rely on some medium, but even light can not escape from the black hole, and no other medium can escape from it.
Source: Red Star News Responsible Editor: Xiao Qi_NN6799