Could you tell me whether the "earth" should be capitalized? like “e” should be “E”？

Question

Could you tell me whether the "earth" should be capitalized?  like “e” should be “E”？

Answer

When it's a proper noun: big "E", no "the"

When it's a common noun: small "e", with "the"

Answer

It depends. There is technically a difference between ¨Earth¨ and ¨an earth,¨ because ¨earth" without being capitalized is a life-giving planet. ¨Earth¨ is this specific planet.

Rule of thumb: if it's ¨the earth,¨ then it's not capitalized.

Answer

The only time you need to capitalise this word is when you are naming the planets : Venus, Mars, Jupiter, Mercury, Saturn.... then 'Earth' would need a capital E.

At all other times, earth is just a word, not a name, so you don't need a capital letter.