Astronautics is a field of study related to the exploration of space and the design of spacecraft.

He is majoring in astronautics.

Mail arrived while I was away from home.

My father's hobby is breeding Ranchu.

My new pet is a ranchu.

This beautiful statue was made with Ranju.

This 'ranju' uses a very rare casting technique.

This page of the book contains a lot of marginal notes.

He was surprised to see the column of water.

He was working as a member of the occupation forces.