Earth or the Earth?

No difference in intent, I am sure, but the usual way is Earth or earth (no article).

There is a huge difference if you follow standard rules of English. First, Earth is a proper noun. You will not be flying to "the Mars" ever, though you might, however slightly, have a chance of flying to Mars.  Hence you live on Earth, not the Earth.

When written "earth" however, we are referring to dirt. So, if the earth in this area is arid, I will not want to plant crops in it, else I

BRAVO! I crusade for this as it is not only technically correct but helps build respect for our one and only Earth!

So would we fly to the moon, or simply fly to Moon?

We would fly to the moon / the Moon.

I love this explaination. So clear, so nice.

Sorry, I can't agree. Actually, it really depends on how "earth" is written into the context. There are countless usages by scientific circles in which "the earth" is used frequently.

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  How Far is Earth from the Sun? | Space.com

  
  www.space.com/17081-how-far-is

'The earth' can also be used when you are trying to signify a simply word like 'ground' in a sentence - Ex: ...keep the earth below my feet strong and I will walk miles... - you can replace 'earth' with 'ground' here, and the meaning will still remain same.

But i am not sure about this bcs there is a possibility to be more moons out there,but if you mean the moon of the earth you have to use the but you can say the both of them when you speak

I have seen both. Many here say that it is because Earth is a proper noun referring to the name of our planet. Earth can also mean, "the earth below are feet" or the soil. However, I think the reason you sometimes see an article and you sometimes do not see one is just because of the toponym itself. We still don't agree if it is called Ukraine or the Ukraine, Ivory Coast or The Ivory Coast or