The light from the sun becomes SUPERCHARGED when it dies and destroys the asteroid belt, finds study
When our sun dies, it takes the asteroid belt of the solar system with it.
A new study suggests that when the life of a star ends, the brightness becomes ten thousand times greater – which is strong enough to wipe out the asteroid belt in small dust particles.
Researchers believe that this event will occur “quickly and violently,” with all but the farthest asteroids in a system that will disintegrate within just a million years.
However, the team concludes that our sun will not end for at least another six billion years.
The new study was conducted by a team from the University of Warwick, who “analyzed the number of consecutive break-up events and how quickly this cascade takes place.”
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When our sun dies, it takes the asteroid belt of the solar system with it. A new study suggests that when a star’s life ends, the brightness becomes ten thousand times greater – which is strong enough to wipe out the asteroid belt in small dust particles
When a star burns all its hydrogen fuel, it becomes hundreds of times larger during a “giant branching phase” and increases its brightness ten thousand times – causing intense electromagnetic radiation.
The star will then shake its outer layers as soon as the expansion stops and leaves a dense core or a white dwarf.
The radiation emitted by the dying star is absorbed by orbit around the asteroids, redistributed internally and then emitted from another location, creating an imbalance.
This imbalance creates a torque effect that turns the asteroid very gradually, eventually breaking the speed with one full rotation every 2 hours – the Earth needs almost 24 hours to complete a full rotation.
This effect is known as the YORP effect, named after four scientists (Yarkovsky, O’Keefe, Radzievskii, Paddack) who contributed ideas to the concept.
And eventually the couple will become so violent that it will tear apart the asteroids into smaller pieces.
This process will continue several times until there is nothing left but cosmic dust.
The scientists have calculated that in most cases, more than ten fission events break up or separate before the pieces become too small to be affected.
Researchers believe that this event will occur “quickly and violently,” with all but the farthest asteroids in a system that will disintegrate within just a million years. However, the team concludes that our sun will not end for at least another six billion years
Main author Dr. Dimitri Veras, of the Astronomy and Astrophysics Group at the University of Warwick, said: “When a typical star reaches the gigantic branching stage, its brightness reaches a maximum of between 1,000 and 10,000 times the brightness of our sun.”
“Then the star shrinks very quickly in a white dwarf the size of the earth, where the light intensity drops to levels below those of our sun.”
“That’s why the YORP effect is very important during the giant branch phase, but almost non-existent after the star has turned into a white dwarf.”
‘For one solar mass of giant branch stars – as will become our sun – even exo-asteroid belt analogs will be effectively destroyed.
“The YORP effect in these systems is very violent and works fast, in the order of a million years. Not only will our own asteroid belt be destroyed, but it will be done quickly and violently. And only because of the light from our sun. “
Experts are looking forward to a sun that pulverizes the asteroids around it, because it allows them to analyze the composition of the particle.
Dr. Veras adds: “These results help locate debris fields in giant branches and white dwarf planetary systems, which is crucial to determine how white dwarfs are contaminated.”
“We need to know where the rubble is by the time the star becomes a white dwarf to understand how discs are formed. The YORP effect therefore provides an important context for determining where that debris comes from. “
“If our sun dies and runs out of fuel in 6 billion years, it will also shed its outer layers and collapse into a white dwarf,” the team explains in a press release.
“As the brightness grows, it bombardes our asteroid belt with increasingly intense radiation, so that the asteroids are subjected to the YORP effect and broken into smaller and smaller pieces, just like in a game of” Asteroids.