The Sun is the star at the centre of the Solar System. It is a massive, nearly perfect sphere of hot plasma, heated to incandescence by nuclear fusion reactions in its core, radiating the energy …

Apr 22, 2025 · The core is the hottest part of the Sun. Nuclear reactions here – where hydrogen is fused to form helium – power the Sun’s heat and light. Temperatures top 27 million °F (15 …

1 day ago · The sun’s current 11-year activity cycle has already peaked—but extreme outbursts from our star may still be in store

Feb 2, 2024 · The sun is an ordinary star, one of about 100 billion in our galaxy, the Milky Way. The sun has extremely important influences on our planet: It drives weather, ocean currents, …

Learn more about the life-giving star at the center of our solar system. Compared with the billions of other stars in the universe, the sun is unremarkable. But for Earth and the other planets...

The Sun is the engine behind much of Earth’s environment, providing energy for everything from ocean currents and weather patterns to the plants and algae that form the base of many food …

The Sun is the closest star to Earth and is the center of our solar system. Learn about fun Sun facts.

Aug 23, 2023 · The sun warms our planet every day, provides the light by which we see and is necessary for life on Earth. Learn about the sun.

Oct 18, 2023 · The Sun is a dynamic and complex star that plays a critical role in our daily lives. It’s a massive, incredibly hot ball of gas that’s been burning bright for billions of years.

Nov 13, 2025 · The Sun is the star at the heart of our solar system. Its gravity holds the solar system together, keeping everything — from the biggest planets to the smallest bits of debris …