Stephen Hawking reveals what existed before the Big Bang

March 7, 2018 by  
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In an interview with astrophysicist Neil deGrasse Tyson , iconic physicist Stephen Hawking reveals what he believes existed prior to the Big Bang. “Nothing was around,” said Hawking, who fortunately elaborated on this point. “The Euclidean space-time is a closed surface without end, like the surface of the Earth,” said Hawking, referring to the four-dimensional conceptual model that incorporates the three dimensions of space with time. “One can regard imaginary and real time as beginning at the South Pole, which is a smooth point of space-time where the normal laws of physics hold. There is nothing south of the South Pole so there was nothing around before the Big Bang.” At least, there was nothing around that humans can currently experience or conceptualize. Since there is no way to measure time prior to the Big Bang , Hawking concludes that simply nothing existed prior to the Big Bang. In his interview with deGrasse Tyson, Hawking also spoke about the questions he would ask of Sir Isaac Newton, were he able to do so by some twist in space-time. “Is the solar system stable? And what happens to a star that cannot support itself against its own gravity ?” Hawking wondered. The stability of the solar system is of particular interest to residents of Earth. Related: Stephen Hawking: Humans must leave Earth within 100 years to survive Hawking has offered some pessimistic assessments of the near-future of our planet. He predicts that the Earth will become a ball of fire within the next 600 years while also warning humanity that we have less than a century to leave Earth before it becomes uninhabitable. He also warned about the existential dangers of artificial intelligence . “Computers can, in theory, emulate human intelligence, and exceed it,” he said in 2017 . “Success in creating effective AI, could be the biggest event in the history of our civilization. Or the worst. We just don’t know. So we cannot know if we will be infinitely helped by AI, or ignored by it and side-lined, or conceivably destroyed by it.” Via USA Today Images via Star Talk and NASA

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Stephen Hawking reveals what existed before the Big Bang

New periodic table shows the cosmic origins of your body’s elements

January 24, 2017 by  
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Believe it or not, your body is largely made of the products from exploding stars, cosmic ray fission, and other Star Trek-esque phenomena. The stellar origins of every atom in your body trace back to the Big Bang , and are now outlined for your enjoyment in a new periodic table that classifies all the elements that make up life on Earth, according to their origin. Ohio State University astronomer Jennifer A. Johnson concocted the colorful table to give folks a better idea of where the ingredients for every living human originally came from. According to Science Alert , the human body is made up mostly of hydrogen, the most common atom in the universe, produced during the Big Bank about 13.8 billion years ago. The remainder of your body’s atoms are the product of ancient stars that merged, exploded and died over the billions of years since the universe was first forged. Others are the result of cosmic rays of high-energy radiation that come from outside our solar system . Related: Scientists observe the light spectrum of antimatter for the first time ever According to Johnson, her periodic table accounts only for the main elements of the human body, while others were cut in an effort to make the chart as relevant as possible. “Tc, Pm, and the elements beyond U do not have long-lived or stable isotopes. I have ignored the elements beyond U in this plot, but not including Tc and Pm looked weird, so I have included them in grey,” she says on her blog . The new table builds on work Johnson did in 2008, with her colleague Inese Ivans from the University of Utah . They launched into the work of putting this table together out of frustration over constantly having to explain which elements go with which process on a periodic table. What they’ve created is a periodic table that identifies the six sources of elements in our body and breaks them down by the stellar process that resulted in their formation. The colors correspond to the various elements and the way they fill up the boxes shows how much of that element is linked to a certain cosmic process or event. Via Science Alert Images via Wikimedia Commons and Jennifer A. Johnson

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New periodic table shows the cosmic origins of your body’s elements

New quantum theory says universe has ‘no end and no beginning’

February 11, 2015 by  
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Philosophy undergrads aren’t the only ones who get to sit around questioning the origins of our existence. Quantum theorists have a similar job, and they’ve developed a new model  that suggests our universe may not have gotten its start from a ‘Big Bang’ as previously thought. Instead, the model indicates that the universe has no finite beginning; it may also account for dark matter and dark energy, neatly tying up several problems at the same time. Read the rest of New quantum theory says universe has ‘no end and no beginning’ Permalink | Add to del.icio.us | digg Post tags: ahmed farag ali , big bang theory , cosmological constant , debunking the big bang theory , origin of the universe , quantum correction terms , rajat bhaduri , saurya das

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New quantum theory says universe has ‘no end and no beginning’

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