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 — in its orbit.

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, seasons, and climate, and makes plant life possible through photosynthesis.

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

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 chains.

Facts about the Sun and detailed descriptions of solar features including sunspots, prominences, flares and coronal mass ejections

A clear guide to the Sun’s age, life cycle, and eventual fate. Learn how scientists measure its age and what will happen when the Sun reaches its final stages.

How Old Is the Sun and When Will It Die? Understanding Its ...

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The Sun is about 100 times wider than Earth and about 10 times wider than Jupiter, the biggest planet. The Sun is the only star in our solar system. It is the center of our solar system, and its gravity holds the solar system together. Everything in our solar system revolves around it – the planets, asteroids, comets, and tiny bits of space ...