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Solar energy

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  • What is the power of the Sun?

  • The Power of the Sun. The sun is the closest star to Earth. Even at a distance of 150 million kilometers (93 million miles), its gravitational pull holds the planet in orbit. It radiate s light and heat, or solar energy, which makes it possible for life to exist on Earth. Plants need sunlight to grow.

  • Why do we get energy from the Sun?

  • All those systems need power, and that power comes from the sun. The sun is an enormous nuclear power source — through complex reactions, it transforms hydrogen into helium, releasing light and heat. Because of these reactions, every square meter of our planet’s surface gets about 342 Watts of energy from the sun every year.

  • What is solar energy and how does it work?

  • Solar energy is any type of energy generated by the sun. Solar energy is created by nuclear fusion that takes place in the sun. Fusion occurs when protons of hydrogen atoms violently collide in the sun鈥檚 core and fuse to create a helium atom. This process, known as a PP (proton-proton) chain reaction, emits an enormous amount of energy.

  • How much energy does the Sun produce per year?

  • The sun is an enormous nuclear power source — through complex reactions, it transforms hydrogen into helium, releasing light and heat. Because of these reactions, every square meter of our planet’s surface gets about 342 Watts of energy from the sun every year.

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