Betelgeuse, known as the star of Orion, has been thought to cause a "supernova explosion" that occurs at the end of its life as a star, but when analyzed from the size of the star, the "supernova explosion" is 10 Research groups such as the University of Tokyo have compiled the results that are more than 10,000 years away.
Among the stars in the universe,
there is a stage where hydrogen causes nuclear fusion in the center like the sun, releasing energy while producing helium and shining, and
then hydrogen runs out and helium causes nuclear fusion. At the stage where carbon and oxygen are formed, heavy elements are generated by nuclear fusion.
▽ Eventually, there is a huge explosion called "supernova explosion" that ends the life as a star, and at
each stage there is a star. It is known that the size of is changed.
Betelgeuse in Orion is known as a large red star, and experts have been paying attention to the possibility of a supernova explosion soon.
A group of senior scientific researchers such as Kenichi Nomoto of the Kavli Institute for the Physics and Mathematics of the University of Tokyo analyzed the internal conditions of Betelgeuse based on data on changes in brightness and temperature, and found that the radius was approximately 750 of the radius of the sun. It was estimated to be twice as large, about two-thirds of the size previously assumed.
According to the group, helium fusion is thought to continue for some time at this size, and it is expected that a "supernova explosion" will occur more than 100,000 years later.
"Unfortunately, we, who are alive now, will not be able to see the Betelgeuse supernova explosion," said Senior Scientific Researcher Nomoto.