He is making a model of a battleship.

I dream of traveling through the universe someday.

Uchuu-kun, have you finished your homework for today yet?

The battle-cruiser played an active role as the main force of the navy.

His dream is to walk in space.

His dream is to do a space walk.

He is passionate about exploring his own innerverse.

His dream is to pilot a spaceship.

The problem of space debris could potentially have a significant impact on future space development.

The study of cosmic rays may hold the key to unraveling the mysteries of the universe.