The sun produce energy when it converts hydrogen atoms into helium atoms in the core of the sun. This process will go on for as long as there is enough hydrogen to convert. In some larger stars, the process can also stop if the pressure of the converted atoms become too high. In this case, the sun may explode from the pressure itself into a super nova.
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The sun's energy comes from nuclear fusion, where hydrogen atoms combine to form helium and release energy in the form of light and heat. Gravity within the sun's core keeps the immense pressure and temperature required for fusion to occur, sustaining the sun's fiery state.
Actually, it's the gravity of the sun that keeps the planets in orbit around it. The force of gravity between the sun and the planets causes them to be pulled towards the sun, while their momentum keeps them moving in a circular or elliptical path.
The planets are kept in orbit around the sun due to the gravitational force between them. This force, which is a balance between the planet's inertia and the sun's gravitational pull, keeps the planets moving in a stable path around the sun.
Gravity. The gravitational pull of the sun keeps the earth close to the sun.
The Sun's strong gravity keeps all the planets in orbit around it.
Gravity is the force that keeps us grounded on Earth and planets in orbit around the sun. Gravity is a pulling force that attracts objects with mass towards each other. In the case of planets orbiting the sun, the gravitational force from the sun keeps them in their respective orbits.