} Therein Lies the Rub.

&--Wednesday, May 23, 2007 ; 6:51 PM
EldwinSchrodinger @ what will happen to our sun?!

loving you always ♥

now lets recap. remember some of the earlier post about exploding stars? it may not end its life soon. but one day it will. its a matter of a few billion years before our sun burnt out its nuclear fuel in its core. and of course. at that time, its theorized, gravity will at last begin willing the "tug-of-war". a ball of dense, HOT gas about 865,000 miles across begins to collapse.
when its more or less condensed or not so hot i should say, it'll become a "white dwarf"
a seething ball of atomic nuclei and loose electrons that in the case of the sun, its only 4 times as large as earth, estimated in cosmic terms of course.
the mass, would still be about the same for now, however, its gravitational pull on the atomic matter at its surface would be far stronger than it is today on earth. imagine the velocity required for an object like a rocketship to escape from the sun's surface would have increased from our 380 mph to over 2,100 mph!
The sun will of course continue to collapse. its certain that it could collapse indefinitely. top get to that point. the star has to be very massive. incase of our sun, with average initial mass, it will collapse no further once it becomes a white dwarf.
in the law of physics, it states that 2 electrons cannot occupy the same energy space, means that there is a limit to how tightly matter can be packed together. this limit apparently is still applicable to white dwarfs. read on and see how this limit breaks down. lols

now, if the original star has a greater mass, lets say its 1.4 times greater than our sun, the exclusion principle (in blue fonts) will be overpowered by gravitation. such stars will collapse further, breaking atomic nuclei apart, destroying atoms.
it then eventually becomes a "neutron star" a heavy mass of neutrons just a mile across. escape velocity at the surface would be 120,000 mph!

and if the star is 3.6 times the mass of our sun, it'll not stop contracting at the neutron star stage. now gravity clearly in charge. it draws the star further down into itself. finally it reaches the point whereby the escape velocity reaches186,282 mph. and thats the speed of light. bythen the star would glow dim and not brighter than a weak electromagnetic shadow. now i believe you should know that that star is by now. a black hole!
btw a black hole is NOT black but its invisible. you'll never be able to trace a blackhole with a telescope. but you'll be able to see one if it happens to devour matter and leaves an accretion disc behind.

Labels: Stars And Suns

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