A star is a celestial object that produces its own light and heat through nuclear fusion. It is typically composed of hot gases, primarily hydrogen and helium, and can vary in size and brightness.
Stars are formed when a large cloud of gas and dust, called a nebula, collapses under its own gravity. As the cloud collapses, it begins to spin and heat up, causing nuclear fusion to start and a star is born.
The life cycle of a star depends on its mass. Smaller stars, like our Sun, will eventually run out of fuel and become a white dwarf. Larger stars, on the other hand, will explode in a supernova before either forming a neutron star or a black hole.
The time it takes for a star to form can vary greatly depending on the size of the nebula and the mass of the star. On average, it can take anywhere from a few million to tens of millions of years for a star to form.
Yes, stars can die. As mentioned earlier, smaller stars will eventually run out of fuel and become a white dwarf, while larger stars will explode in a supernova before forming either a neutron star or a black hole. The death of a star is a natural part of its life cycle.