ALREADY so that’s a common thing black hole OR black hole it comes from a dead star. Quite a few people think that the Sun will suffer a similar fate if its energy runs out.
But according to Xavier Calmet, professor of physics at the University of Sussex, when it dies the Sun will not become a black hole like other stars. This is because the Sun does not have sufficient capacity.
“It’s simple, the Sun is not heavy enough to become a black hole,” he was quoted as saying Science live Wednesday (06/09/2023).
Calmet explained that there are several conditions that influence whether a star can become a black hole. This includes its composition, rotation, processes governing its evolution, and sufficient mass.
Currently, scientists think that a dying star must leave behind a stellar core many times the mass of the Sun to create a black hole.
“Stars with initial masses greater than 20 to 25 times the mass of our Sun could potentially experience the gravitational collapse necessary to form black holes,” Calmet said.
For your information, when a star runs out of nuclear fuel in its core, nuclear fusion of hydrogen into helium still occurs in its outer layers. So, when the core of a star collapses, its outer layers expand and enter the so-called red giant phase.
When the Sun becomes a red giant in about 6 billion years, a billion years after it runs out of hydrogen in its core, it will expand to encircle Mars’ orbit, engulfing the inner planets, perhaps including Earth.
The red giant’s outer layers will cool over time and expand to form a planetary nebula around the Sun’s fiery core. Massive stars that create black holes go through several periods of collapse and expansion and lose more mass each time.
This is because at high pressure and temperature, stars can fuse heavy elements. This continues until the star’s core turns to iron, the heaviest element a star can produce, and the star explodes in a supernova, losing even more mass.
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