earth sun moon

Early Learning Teaching Your Child - Other Topics
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Do you know if earth , sun , moon must always be written as Earth, Sun , Moon?
Must we use capital letters for E, S and M?
I don’t see it written like that, but when I check wiki, these were written as Earth , Sun , Moon, someone said, sun and moon could be written in small letters only Earth, must be written in capital E.

Any website to check for answer?

Thanks.

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Celestial bodies

The words sun, earth, and moon are proper nouns when the sentence uses them in an astronomical context: “The Sun is the star at the center of the Solar System”; but not elsewhere: “It was a lovely day, because the sun felt warm”. These terms are only proper nouns when referring to a specific celestial body (our Solar System, Sun, Earth, and Moon): “The Moon orbits the Earth”; but not elsewhere: “Io is a moon of Jupiter”.

Names of planets, moons, asteroids, comets, stars, constellations, and galaxies are proper nouns and begin with a capital letter: “The planet Mars can be seen tonight in the constellation Gemini, near the star Pollux.” and “Halley’s Comet is the most famous of the periodic comets.” and “The Andromeda Galaxy is a spiral galaxy.”

http://en.wikipedia.org/wiki/Wikipedia:Manual_of_Style_(capital_letters)

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thanks a lot… :slight_smile: karma to you.