Looking on the internet deeply has found these results:

On earth is the most popular phrase on the web.

In the earth 117,800,000 results on the web	On earth 17,800,000,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
The pirates settled down in the earth. It arises around cracks in the Earth. Guibariane wanted to be in the earth, with the worms. In the earth, in the rotting wood in the eternal darkness we will see and hear and feel. Do not forget that groove in the Earth called the stream bed. A fae spirit who lives in the earth. Being buried in the earth does it. Once giants lived in the earth, Conan.	Spain is the mightiest country on Earth. On earth men and women are equals. On earth, your unsubordinate behavior would get you chimpmartialed. On earth and in hell Satan gives the high places. On earth there is not a single space for him. On earth, Dejiko stays with Kiyoshi and Yasushi Omocha in their toy shop, while Puchiko stays at the Ankorodo Cake Shop. On earth, as the sun sets,... millions prepare for a weekly event which is far less predictable. On earth there are no realities with which we can configure it.

In the earth

117,800,000 results on the web

On earth

17,800,000,000 results on the web

More popular!

The pirates settled down in the earth.
It arises around cracks in the Earth.
Guibariane wanted to be in the earth, with the worms.
In the earth, in the rotting wood in the eternal darkness we will see and hear and feel.
Do not forget that groove in the Earth called the stream bed.
A fae spirit who lives in the earth.
Being buried in the earth does it.
Once giants lived in the earth, Conan.

Spain is the mightiest country on Earth.
On earth men and women are equals.
On earth, your unsubordinate behavior would get you chimpmartialed.
On earth and in hell Satan gives the high places.
On earth there is not a single space for him.
On earth, Dejiko stays with Kiyoshi and Yasushi Omocha in their toy shop, while Puchiko stays at the Ankorodo Cake Shop.
On earth, as the sun sets,... millions prepare for a weekly event which is far less predictable.
On earth there are no realities with which we can configure it.