The Sun is a huge, bright sphere of mostly ionized gas, about 4.5 billion years old, and is the closest star to Earth at a distance of about 150 million km. Our Sun supports life on Earth. It powers photosynthesis in green plants and is ultimately the source of all food and fossil fuel. The connection and interaction between the Sun and the Earth drive the seasons, currents in the ocean, weather, and climate. The Sun contains 99.86% of the mass of the entire solar system. At the core, the temperature is 16 million degrees kelvin (K), which is sufficient to sustain thermonuclear fusion reactions. Like Jupiter the Sun has differential rotation, 25.4 days near the equator and 36 days near it's poles. The core of the Sun rotates like a solid body.

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Sun rise and set Full disk images Solar eclipses Sunspots
© Copyright Rob Kantelberg
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