The Sun is the star at the center of the Solar System. The Sun has a diameter of about 1,392,000 km (865,000 mi) (about 109 Earths), and by itself accounts for about 99.86% of the Solar System's mass; the remainder consists of the planets (including Earth), asteroids, meteoroids, comets, and dust in orbit. About three-quarters of the Sun's mass consists of hydrogen, while most of the rest is helium. Less than 2% consists of other elements, including iron, oxygen, carbon, neon, and others.

The Sun in the works of Harry Turtledove

In most of the works of Harry Turtledove, the Sun is exactly the same body and performs the exact same functions. Certainly, no story has been set on the Sun.

In nearly all Turtledove works, the Sun is orbited by eight planets, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, plus the dwarf planet Pluto. In A World of Difference, Minerva replaces Mars.

The sun plays an indirect role in the story "But It Does Move", which is a story about Galileo Galilei's advocacy for the heliocentric model of our solar system.

In Worldwar, the Race designate the Sun "Tosev". Earth, then is "Tosev 3".

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