Hydrogen
it has it own fuel
Hydrogen, but its not burning, its fusing.
They say what is possible to imagine. Burning hydrogen at an average amount of 4 tonnes per second, they calculate the Sun will have fuel for the next 4 billion years.
The sun is our local star. It is a giant fusion engine, and it is "burning" hydrogen and fusing it into helium at an enormous rate. But as long as it has fuel to drive the fusion process that is the sun's life, it will burn fuel continuously. It has been burning for about 4.5 billion years, and it has about that much more time left.
The sun is burning gasses just like the stars. And just like any star, when the gas runs out, it will stop burning and disappear.
The Sun is estimated, based on its size and energy production, to be about 5 billion years old."The Solar System", Roman Smoluchowski, Scientific American Library, 1983, page 6
The Sun Is Burning was created in 1964.
Red Giant effect: When the primary fuel of the sun depleted, the fusion of 2H -> He stop at the core and the core contract. The surface is still burning but greatly expand with lower temperature from existing sun but a lot larger. Finally, when the sun really burn out it, the collapse remain mass become White Dwarf. All is part of stellar evolution. Process of Sun burning is Nuclear Fusion Reaction, refer to it as burning usually make confuse that the sun is chemically burn and require oxygen.
Fuel burning is the burning of fuel. In an automobile engine it is called combustion. The gasoline mixed with oxygen and ignited by the spark plugs explodes.
The sun is currently in the main sequence stage. Next, it will evolve into a red giant as it depletes its hydrogen fuel and starts burning helium in its core.
The sun has been burning for about 4.6 billion years and is currently halfway through its life cycle. It is estimated to continue burning for another 5 billion years before it exhausts its nuclear fuel and transitions into a red giant.
Not really; the Sun will continue burning for several billions of years more. Before the fuel gets depleted, we will have another problem: in a few hundred million years, the Sun will grow too hot for life as we know it to exist on Earth.Not really; the Sun will continue burning for several billions of years more. Before the fuel gets depleted, we will have another problem: in a few hundred million years, the Sun will grow too hot for life as we know it to exist on Earth.Not really; the Sun will continue burning for several billions of years more. Before the fuel gets depleted, we will have another problem: in a few hundred million years, the Sun will grow too hot for life as we know it to exist on Earth.Not really; the Sun will continue burning for several billions of years more. Before the fuel gets depleted, we will have another problem: in a few hundred million years, the Sun will grow too hot for life as we know it to exist on Earth.