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[Tech Talk] Hawking warns: We must be cautious in responding to signals from aliens

2016-10-15View Original

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According to the UK’s Daily Mail, many people hope to hear radio signals from other planets that might reveal the mystery of aliens, but the world-renowned physicist Stephen Hawking warns that we should be very cautious in responding to such signals from aliens. In a 25-minute video online, Hawking takes the lead role as he travels to Gliese 832c, which is 16 light-years away; he suggests that this planet could harbor intelligent life. However, if we truly encountered a highly advanced alien civilization, just as the indigenous peoples of the Americas did with Columbus, our situation would not be good. The title of this video is “Stephen Hawking’s Favorite Areas in Space.” Hawking described that when he looks up at the night sky, he always imagines that there must be some alien civilization out there in the vast universe, watching Earth. As he grew older, he became even more convinced that humans on Earth are not the only intelligent life form in the universe. Currently, scientists around the world are working to search for signals of intelligent life outside Earth, focusing on millions of nearby stars, but I believe there is one star that is most likely to harbor life. One day in the future, we might receive signals from planets similar to Gliese 832c, but we should be cautious in responding to greetings from aliens. The 25-minute video takes the viewer on a journey through space and time, showing Hawking visiting the supermassive black hole at Sagittarius A*, followed by the planet Gliese 832c. He explains that this is the exoplanet in the universe most similar to Earth, and thus the one most likely to harbor extraterrestrial intelligent life forms. In recent years, we have discovered thousands of planets outside our solar system; some of these planets are covered in scorching lava, while others are made of solid diamond and orbit dying stars. However, some planets are very similar to Earth, and we have found that a planet located nearby Earth, at a distance of 16 light-years, is likely to possess the conditions necessary for supporting life. Gliese 832c is a \"super-Earth\" planet with a mass at least 5 times that of Earth.
Reply #22016-10-15
A team of international astronomers says that Gliese 832c is located in the habitable zone of the star Gliese 832, at an appropriate distance from the star that allows liquid water to exist on its surface. Hawking argued that the discovery of intelligent life forms would be the greatest discovery in human history, and it would force humanity to change; we must abandon the idea that humans are unique in the universe. However, there are other unknown factors regarding the planet Gliese 832c; for example, the unknown components of its atmosphere could make it vastly different from Earth and render it incapable of supporting any form of life. Meanwhile, Gliese 832c completes one orbit around its star in just 36 days. Its atmosphere is extremely dense, and the thick fog surrounding the planet’s surface effectively \"chokes\" it; or worse still, there is a strong gravitational pull on the side of the planet that faces its nearby star. This means that one side of it always faces its primary star. Although this planet could become a new home for humans on Earth in the future, Hawking pointed out that there might be some unexpected differences on this planet, such as plants on its surface being black and purple in color. This planet may have temperatures similar to Earth’s, with abundant liquid water and intelligent life forms; where there is water, life usually exists.
Reply #32016-10-16
Perhaps Earth is an alien pasture, and humans are just unaware of it.
Reply #42016-10-16
This is also a hypothesis regarding ant societies
Reply #52016-10-16
Yes, humans are far from as amazing as they think; they’re not much different from ants.
Reply #62016-10-16
Someone once said that the Earth is like the large aquarium we buy, the kind with a filtration system. Just look at the movement of the seawater to understand: there is a large hole on the seabed, and seawater keeps flowing in there, then coming out from certain places like water springs. The garbage in the sea accumulates in the vortices formed at these intake points, covering an area of several kilometers and unable to be removed.
Reply #72016-10-17
It should be like the American blockbuster Prometheus – don’t go provoking aliens just because you’re full; otherwise you might invite trouble upon yourself~
Reply #82016-10-17
It seems the vision of The Three-Body Problem is about to become a reality?

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