Earth science is an important field of study for unraveling the mysteries of nature.

I am an Earthling.

We are searching for extraterrestrial life.

He has a deep interest in the European cultural sphere.

Category theory is a branch of mathematics that studies structures and their relationships.

The geosphere refers to the solid part of the Earth.

I work in the capital city area.

I was born and raised in the National Capital Region.

He wants to work in an Anglosphere country.

Protecting the biosphere is important for the future of the Earth.