Further collapse of a white dwarf is prevented by electron degeneracy pressure.
Yes, a star undergoes significant changes throughout its life cycle. It is born from a collapsing cloud of gas and dust, transforms through nuclear fusion, and eventually dies, either collapsing into a dense core (like a white dwarf or neutron star) or exploding in a supernova. Each stage brings about different characteristics and behaviors in the star.
Yes, far smaller. A red dwarf is a whole star in and of itself. A white dwarf is the collapsed remnant of the core of a low-to medium mass star. A white dwarf may be about the size of Earth.
The correct order of these stellar evolutionary stages is main sequence, red giant, white dwarf. A star begins its life on the main sequence where it fuses hydrogen into helium. As it runs out of fuel, it expands into a red giant before shedding its outer layers and collapsing into a white dwarf.
When the sun runs out of fuel for fusion, it will expand into a red giant, shedding its outer layers into space, before eventually collapsing into a white dwarf. This process will take several billion years to occur.
No, stars do not exist forever. They eventually run out of fuel and undergo various stages of evolution, ending in a supernova explosion or collapsing into a white dwarf, neutron star, or black hole.
A star that has exhausted its supply of hydrogen will evolve into a red giant or supergiant, depending on its initial mass. Eventually, it may undergo a helium flash and fusion of heavier elements before collapsing into a white dwarf or supernova.
Completely free :)
A white dwarf's stability is maintained by electron degeneracy pressure, which prevents further collapse due to the immense gravitational pull.
The pressure within the white dwarf. The situation is somewhat different from normal gas pressure; the kind of pressure within a white dwarf is called "degenerate pressure".
Dwarf galaxies merely refer to the size of the galaxy itself, not the stars in the galaxy, so no.
What do you think? Of course not.
Yes, a star undergoes significant changes throughout its life cycle. It is born from a collapsing cloud of gas and dust, transforms through nuclear fusion, and eventually dies, either collapsing into a dense core (like a white dwarf or neutron star) or exploding in a supernova. Each stage brings about different characteristics and behaviors in the star.
A white dwarf star, as well as any other stable variety of star,is held together by the pressure popularly known as "gravity".In the opposite direction, white dwarf stars are kept from collapsing completely by degeneracy pressure. Specifically, for white dwarf stars, it's electron degeneracy pressure, which arises from the fact that electrons are fermions and cannot all occupy the same energy state. For higher mass stars, the force of gravity is able to overcome this and push all the electrons into the ground state, and the star is supported by a different kind of degeneracy ... neutron degeneracy, which is the same thing but with neutrons ... and you get a neutron star. At even higher masses, even that isn't sufficient and the star collapses all the way into a black hole.
They use there claws
Black Dwarf's are theoretical. They are the end point of a White Dwarf star, after it has finished cooling down. The universe is not old enough for one to have completely cooled into a Black Dwarf. See related question.
Yes, far smaller. A red dwarf is a whole star in and of itself. A white dwarf is the collapsed remnant of the core of a low-to medium mass star. A white dwarf may be about the size of Earth.
The correct order of these stellar evolutionary stages is main sequence, red giant, white dwarf. A star begins its life on the main sequence where it fuses hydrogen into helium. As it runs out of fuel, it expands into a red giant before shedding its outer layers and collapsing into a white dwarf.