Gravitational potential energy drives the collapse throughout the life of a star, from birth to death.
The initial energy source for a forming star is gravitational potential energy. As a cloud of gas and dust collapses under its own gravity, the potential energy is converted into kinetic energy, leading to an increase in temperature and pressure at the core. This eventually triggers nuclear fusion reactions, predominantly hydrogen into helium, which become the star's primary source of energy.
When a supernova collapses suddenly, the intense gravitational forces cause the core to shrink rapidly, forcing protons and electrons to combine into neutrons. This results in the formation of a neutron star or a black hole, depending on the initial mass of the collapsing star. The collapse also releases an enormous amount of energy in the form of neutrinos and a blast wave, dispersing heavy elements and enriching the surrounding space.
No, it is not source of any energy as it is a planet not a star.
nuclear fusion
nuclear fusion
Super nova
quasar
The Sun, in the form of radiant energy from the star.
by it self, they create & produce their own energy just like the sun
hydrostatic
By a Star collapsing on its self.
"While the star can produce energy, that keeps the star in balance - it keeps the star from collapsing. By the way, another outward force is the gas pressure, but that, by itself, is not enough to counteract the force of gravity in the case of a star."