Thursday, 7 September 2023 – 11:07 WIB
LIVE Techno – In about 5 billion years, the Sun will reach the end of its nuclear fuel life and will no longer be able to support itself against gravity.
The outer layers of our star would have dispersed (possibly destroying the Earth in the process), while the core would have collapsed to become extremely dense, leaving behind stellar remnants.
If the gravitational collapse of the star’s core is complete, the rest of the star will become a black hole, a region of time and space with gravitational influence so great that not even light can escape its clutches.
So will the Sun become a black hole when it dies? The short answer is ‘no’ because the giant does not have the ability to become a black hole.
“Simply put, the Sun is not heavy enough to become a black hole,” said Xavier Calmet, a black hole expert and professor of physics at the University of Sussex in England.
According to the Live Science page, Thursday, September 7, 2023, several conditions will influence whether a star can become a black hole – including its composition, rotation, and the processes that govern its evolution – but the main requirement is the right amount of mass.
“Stars with an initial mass greater than 20 to 25 times the mass of our Sun have the potential to experience the gravitational collapse necessary to form a black hole,” said Calmet.
Illustration of a black hole or black hole.
This threshold is known as the Tolman-Oppenheimer-Volkoff threshold, first calculated by J. Robert Oppenheimer and colleagues.
Today scientists think that a dying star must leave its core which is about two to three times the mass of the Sun to create a black hole.
When a star runs out of nuclear fuel in its core, nuclear fusion of hydrogen into helium still occurs in its outer layers.
So, as the star’s core collapses, its outer layers expand and enter what is known as the 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 – the star will expand around the orbit of Mars, engulfing the inner planets, including Earth.
The red giant’s outer layers will cool over time and scatter to form a planetary nebula around the Sun’s fiery core.
The massive star that creates the black hole goes through several periods of collapse and expansion, losing more and more mass each time. This is because at high pressures and temperatures, stars can fuse heavier elements.
Then it continues until the star’s core is made of iron, the heaviest element a star can produce. The star then explodes into a supernova, causing it to lose even more mass.
2023-09-07 04:07:01
#Sun #Black #Hole
