Blues Man
Diamond Member
- Aug 28, 2016
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Our sun won't explode as it doesn't have enough mass to go super nova.
It happens when the sun runs out of fuel and reaches critical mass or if another star collides with it. The latter I wasn't aware until this year, so this is likely to do it if the object doesn't hit Earth first. It explains the big news of some massive object coming "close" to Earth only a few million miles away. Read about Tycho.
"But what causes these explosions? There are currently two explanations involving theoretical mechanisms that are related to the two ways in which stars die. Stars cannot shine forever for the simple reason that their energy supply—nuclear burning—is finite. What happens to stars once they exhaust their nuclear fuel (mainly hydrogen) is believed to depend crucially on their mass. One of the most important theoretical discoveries in astrophysics is that a critical mass exists above which stars cannot sustain themselves against their own gravitational pull without a continuous supply of energy. The two types of star endings depend on whether their mass is above or below this critical mass, which is called the Chandrasekhar mass limit, named after Subrahmanyan Chandrasekhar (Member, 1941, 1976), one of its discoverers. If, by the time a star exhausts its fuel, it has a mass greater than this limit, the core of the star cannot sustain itself and collapses. A huge amount of energy is released when the core collapses to the tiny size of a few kilometers, becoming a black hole or a neutron star. While most of this energy is emitted in invisible neutrinos, a small fraction of this energy ejects the outer parts of the star, creating an explosion sufficient to produce a supernova. Such a theoretical event is called a core-collapse supernova."
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"In a combined effort led by Member Doron Kushnir with Katz, Dong, Member Rodrigo Fernandez, and Eli Livne of Hebrew University, the detailed process of white dwarf collisions was calculated and shown to reproduce several features of the broad distribution of type Ia supernovae. For the first time since their discovery by Tycho more than four centuries ago, a detailed scenario for a significant fraction of supernovae was studied in which the explosions could be numerically calculated from first principles based on the physically well understood processes of Newtonian dynamics, hydrodynamics, and thermonuclear burning. In a paper published by our group, the model was shown to successfully pass three independent and robust observational tests, including the successful recovery of the wide distribution of Ni56 masses. It is thus very likely that what Tycho thought was the sudden birth of a new star was actually the violent death of two. He might have been gratified to learn that the two stars collided due to the application of the same law of gravity that would later be deduced based on his dedicated observations."
What Causes Supernovae Explosions?
On the evening of November 11, 1572, twenty-six-year-old astronomer Tycho Brahe was about to make a discovery that would change his life and consequentially boost the scientific revolution significantly. While casually staring at the night sky, he suddenly noticed a very bright unfamiliar star...www.ias.edu
ETA: What you casually add to what God created as EMS in not natural. What we have discovered in nature is that energy is neither created or lost. It is only converted. Thus, you are wrong again and you just received a notice from the all-powerful God.
What will happen is as the sun runs out of fuel it will expand to become a red giant star because there will be insufficient mass for gravity to keep the gases confined.
The sun will engulf the inner planets and burn them to cinder after the all that will be left is a white dwarf, a very dense cool star remnant.
The other looming catastrophe is the inevitable collision of the Milky Way with the Andromeda galaxy.
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