The process of terraforming is part of transforming other planets into a habitable environment for humans.

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 practiced hard to make up for his previous failure.

He is practicing hard to avenge the embarrassment of last year's defeat.

The power of that bomb is beyond imagination.

He is devoting his energy to his work.

Our country's military power is the strongest in the world.

Our military force is significantly inferior to the enemy's.