1. Seeing is believing
Scientists knew about the existence of black holes decades ago, but only indirectly. Three years ago, they actually heard the sound of two smaller black holes colliding to form gravitational waves The image released by 10 shows the edge of a black hole-the so-called "horizon" for the first time.
Allen Marshall, an astronomer at Boston University, said that there are some academic diehards who deny the existence of black holes, but now they can't.
Einstein was right again.
Every major discovery in astrophysics in the past decades tends to confirm Einstein's general theory of relativity. This is a comprehensive explanation of gravity that the former patent office staff came up with with a telescope with a much lower magnification at 19 15 before the computer came out.
In June of 5438+00, Einstein's prediction about the shape and brightness of large black holes was proved to be correct, and one astronomer after another paid tribute to the master.
3. Strong gravity
The black hole photographed by scientists is located in the center of a galaxy named M87, which is much larger than any black hole in the Milky Way. Its mass-the main measure of a black hole-is 6.5 billion times that of the sun. Its horizon extends approximately to our solar system.
Some black holes are inactive, but this one is not. This means that its efficiency of converting nearby gases and substances into energy is 100 times higher than that of nuclear fusion. Nuclear fusion is the way for stars to gain energy.
4. Cooperation pays off
According to the National Science Foundation of the United States, the success of this project is attributed to the international cooperation of about 200 scientists from 20 countries and regions, costing 50 million to 60 million US dollars.
In order to get an image of a distant black hole, scientists have to set up eight radio telescopes on many continents, including Antarctica, so as to observe the same place at the same time. By connecting these observation instruments, they actually created a networked telescope the size of the earth.
The amount of data generated is so huge that it can't be transmitted through the internet, so it is transported to the data center by jet. The data collected is equivalent to the number of photos taken by 40,000 people in their lifetime.
Black holes are the last stage of star evolution. Black holes have high density and great gravity. The speed of the second universe is faster than the speed of light (V2=√2V 1) so that even light will not come out of the planet. We can only perceive its great attraction to the surrounding objects, but it is difficult to see its true face.