The ever-increasing death toll from coronavirus disease, Covid-19, has made many of us doubt our mortality. But even that, most of us are not too worried about the end of the world happening every moment.
And we can continue to rest easily, since the expiration date of the universe is far away, although a scientist has calculated when and how the universe will end.
It will sometimes happen over the “next few trillions of years,” according to theoretical physicist Matt Caplan. The end of the world as we know it will not come with a bang. Most stars will “fissure very, very slowly as their temperature drops to zero,” he says.
Caplan described it as “a bit of a sad, lonely, cold place”, in a statement Caplan said there will be no one to witness this long farewell that will happen in the distant future.
“It’s known as ‘hot death,’ where the universe will be mostly black holes and burning stars,” said the assistant professor of physics at Illinois State University, whose research was published in the journal Monthly Notices of the Royal Astronomical Society.
In the investigation, Caplan looked for possible stellar explosions and found that even in the dark, silent fireworks could be like explosions of the remains of stars that should never explode. Many white dwarfs may explode into supernovae when everything else in the universe has died and gone silent. As they get closer, these stars will become “black dwarf” stars that can produce iron in their nuclei.
According to NASA, a supernova is the explosion of a star, while a white dwarf is a star near the end of its life that has used most of all its nuclear fuel and collapsed in a large plane equal to Earth.
“Stars less than 10 times the mass of the sun have the weight as the density not to produce iron in their nuclei as mass stars do, so they can not currently explode in a supernova,” Caplan said. “While dwarfs know to cool off over the next few trillion years, they will dimmer, eventually freeze and become ‘black dwarf’ stars that no longer shine.”
Since iron cannot be burned by stars, it accumulates as a poison, making the star attack a supernova.
According to Caplan’s calculations, the theoretical explosions he calls “black dwarf supernovae” will begin to occur in about 10 to 1100 years.
“In a year, it’s like saying the word ‘trillion’ almost a hundred times,” he said.
And not all black dwarfs will explode as well. Caplan said that only the most massive black dwarfs, about 1.2 to 1.4 times the mass of the sun, will blow. ”
In numbers, this means that as much as one percent of all the stars that exist today, about a billion trillion stars, will inflate this way.
Caplan has calculated that the most massive black dwarfs will first explode, followed by gradually less massive stars, until after about 10 ^ 32000 years there are no more. At that point, the universe can be really dead and quiet.
‘It’s hard to imagine that after that, black dwarf supernova is the last interesting thing that can happen in the universe. They could be the last supernova ever, ”he said.
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