Post by Radrook Admin on Jun 2, 2019 20:45:17 GMT -5
Mass and the Death of Stars
Same with stars, they look long-lived because we are short-lived but they did have their birth, do experience middle age, then old age and death just as we humans. Barring an accident or violence, human deaths are based on the deterioration of our cellular activities while stars is related to how mass affects their nuclear-fusing cores.
Stars seem pretty permanent don’t they? One human generation goes and another arrives and there they still are, exactly as described before for thousands of years. No one tends to imagine remnants of stars that have died. Yet all this is an illusion. Contrary to appearances, stars have lifetimes just as humans do, and experience a dying stage.
What causes the illusion of permanency is the difference between human and star lifespans. Star duration is measured in millions and billions and trillions of years, while ours is measured in mere eight or nine decades
What causes the illusion of permanency is the difference between human and star lifespans. Star duration is measured in millions and billions and trillions of years, while ours is measured in mere eight or nine decades
This can be compared to the difference between human and Mayfly lifespan. Mayflies don’t even last a day before they are dead. So if they could reason, to them we might appear like stars, never changing. One generation of flies would tell next that we had always been present at the river-bank house for 365 of their generations which to us would have been merely a year.
Same with stars, they look long-lived because we are short-lived but they did have their birth, do experience middle age, then old age and death just as we humans. Barring an accident or violence, human deaths are based on the deterioration of our cellular activities while stars is related to how mass affects their nuclear-fusing cores.
The following chart correlates mass to stellar lifespan:
Star mass Time (years) Spectral type
60 (solar masses) 3 million O3 = [Sixty times the mass of our sun! Lasts just three million years before becoming a black hole.]
30 (solar masses) 11 million O7 [ Will become black holes]
10 (solar masses) 32 million B4 [Will become black holes]
3 (solar masses) 370 million A5
1.5 (solar masses) 3 billion F5
1 (solar masses) 10 billion G2 (Sun) [Eventual white dwarfs]
0.1 (solar masses) 1000's billions M7
Here is Excellent information on stars and their mass.
www.studyblue.com/notes/note/n/astronomy-final-exam-2013/deck/8903819
As you can see, stars with one solar mass or more, don't last as long as red dwarfs, which make up approx.76 percent of the stars. That’s because being less massive, red dwarfs are using up their fuel at a far lower rate. The faster the rate, the shorter the star’s lifespan. The denser the star is, the faster it fuses the elements in its core and shells into other elements.
When a star is considered dead?
Once the star ceases to fuse elements in its core and shells, it is considered dead. The remnants of such stars are called neutron stars, white dwarfs, black dwarfs, and black holes. This doesn't mean that they cannot shine.
White dwarfs do shine, but the glow is produced by gravity and residual heat from its fusion days and not fusion at their core.
Black themselves holes don't shine. However, their gravity pulling in material, even entire stars sometimes, will produce an accretion disk that generates visible light far exceeding the brilliance of any star. These are called quasars. In fact, there is a black hole in the center of our galaxy which emits such light.
White dwarfs do shine, but the glow is produced by gravity and residual heat from its fusion days and not fusion at their core.
Black themselves holes don't shine. However, their gravity pulling in material, even entire stars sometimes, will produce an accretion disk that generates visible light far exceeding the brilliance of any star. These are called quasars. In fact, there is a black hole in the center of our galaxy which emits such light.
Dead Stars
curious.astro.cornell.edu/physics/80-the-universe/stars-and-star-clusters/stellar-remnants/364-if-a-white-dwarf-is-a-dead-star-why-is-it-so-hot- intermediate.Addendum
Please note that the predictions concerning our Sun in which it suffers the same fate as other stars of a similar kind, are made by persons who are atheists. Christian scientists do not believe that the Sun would be allowed to go through the same process.
Here is how a Christian astronomer would see it:
www.christianityboard.com/blogs/stars-seem-pretty-permanent-don’t-they.2130/