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DIAMETER

870,000 miles
(1,390,000 km)

AVERAGE SURFACE TEMPERATURE

9932°F (5500°C)

TYPE OF STAR
Yellow G2

01 The Sun

The sun is the star at the center of our solar system, holding everything together with its intense gravity. It keeps objects more than 7 billion miles away within its orbit!

Like other stars, the sun revolves around our galaxy, the Milky Way. Key to life on Earth, the sun drives our seasons, ocean currents, weather and climate.

NAMING

The word “sun” is derived from the Old English sunne. In ancient times, the Romans named our sun Sol and the Greeks name it Helios.

FUN FACTS

The sun is a ball of plasma and does not burn. Intense heat and energy is created through a nuclear fusion process where hydrogen protons crash into helium protons. These protons fuse creating energy that moves from the sun’s core out past its surface.

Features like sunspots and solar flares are found on the solar atmosphere, which is made of a thin layer of gases.

The sun is so gigantic that it takes up 99.8 percent of the entire solar system!

 

 

Exploring the planets, moons and other bodies orbiting our sun.

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©2014 Josh Lewis