Stephen Hawking, a well-known physicist, died at the age of 76, a spokesman announced Thursday. Hawking, who has been devoted to exploring the mysteries of the universe, has made any predictions? Today's editor will take you to check the classic quotations that Hawking once put forward?
Hawking quote 1: 'aliens' are looking at you
At the launch ceremony of the Royal Society of Science in London in 2015, Hawking said: 'there must be other forms of life in the infinite universe. '
He said: 'maybe alien life will be staring at us. "No matter whether the intelligent life outside the earth exists or does not exist in the end, it's time for someone to put in formally. We have to figure out the problem. '
According to reports, the project will use some of the world's largest telescopes to go further into the universe to capture any radio waves and laser signals.
Hawking's quotation 2: within a thousand years, human beings must immigrate to other stars or be 'extinct'
Hawking said in a speech in Los Angeles that he believed that in the next 1000 years, it is basically certain that the earth will be destroyed by a major disaster, such as nuclear war or greenhouse effect. As a result, he stressed that humans must move to other planets. NASA Administrator Griffin also said that species on a single planet are unlikely to survive forever.
In the solar system, Mars is the best choice for human habitation besides the earth. But Mars manned exploration will take decades to implement, and it will take 450 days to make a round trip.
Hawking said: 'human extinction is possible, but it is not inevitable. I am an optimist. I believe that the development and progress of science and technology can eventually bring human beings out of the solar system and into the far reaches of the universe. '
Data: Stephen Hawking, a famous physicist.
Hawking's quotation 3: intelligent machine is the real human 'terminator'
Hawking has repeatedly said that 'the thorough development of artificial intelligence may lead to the extinction of human beings'.
According to Hawking, AI technology does bring convenience to human life in the early stage of development, but machines will probably redesign themselves at an ever accelerating speed. However, human beings are subject to the speed of biological evolution, unable to compete with it, and finally surpassed. The scientific community named this turning point of artificial intelligence beyond human intelligence 'singularity'.
In fact, Elon & middot; musk, CEO of space X in the United States and the famous prototype designer of iron man, and Bill & middot; gates, founder and philanthropist of Microsoft, have also warned against the 'harm' of artificial intelligence. MIT professors, scientists, Google, IBM, Microsoft and other corporate employees, as well as investors related to the field of artificial intelligence, also jointly sent open letters expressing the same concerns.
Hawking's quotation 4: 'black holes do not exist? Only' grey holes'?
In a paper on "information preservation and weather forecast of black holes", Hawking pointed out that black holes do not exist, but "grey holes do exist", which shocked the physics world again.
Hawking put forward the famous "Hawking radiation" theory in 1976, that is, the black hole in the formation of mass reduction, but also constantly in the form of energy radiation to the outer boundary. But once the black hole condenses and evaporates, all the information in it disappears, which contradicts the theory of quantum mechanics that such material information will never disappear completely. This is the so-called black hole paradox.
For more than 30 years, Hawking has tried to explain this contradictory view with various speculations. Now it seems that he has given a more convincing answer. Hawking admitted that his initial understanding of the black hole boundary 'horizon' was flawed, and that light could actually cross the horizon. He said that black holes never completely shut down themselves. After being trapped by black holes for some time, matter and energy will be released into the universe again.