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Sun

✨ The engine of life

The Sun is the star at the center of our Solar System and the main source of energy for Earth. It formed about 4.6 billion years ago from a large cloud of gas and dust that collapsed under gravity.

The Sun is made mostly of hydrogen and helium, and its enormous size allows nuclear fusion reactions to occur in its core. During this process, hydrogen atoms combine to form helium and release energy that travels through space as light and heat.

The Sun contains more than 99% of the total mass of the Solar System and its gravity keeps planets, moons, asteroids, and comets in orbit. Its energy makes life possible on Earth by providing warmth and supporting processes such as photosynthesis in plants.

The Sun is not a solid object but a huge sphere of extremely hot plasma. Although it appears constant from Earth, it changes over time and produces activity such as solar flares and streams of charged particles called the solar wind. Studying the Sun helps scientists understand stars and their influence on planetary systems.

💡 Did you know?

Do you know that sunlight takes 8 minutes and 20 seconds to reach us? That means if the Sun suddenly went out, we wouldn't realize it until 8 minutes later! Its light travels at 300,000 km per second, which is the maximum speed in the universe.

The Sun is the 'heavyweight' of our system. It is so heavy that it contains 99.8% of all the mass in our Solar System. Its giant gravitational pull is what holds all the planets, including Earth, and prevents them from getting lost in space.

Did you know? The Sun sometimes has 'tantrums'! It propels gigantic jets of gas and energy into space, called solar flares. When these jets come near Earth, they create beautiful colored lights in the sky called auroras, but they can also disturb our satellites and phones.