He walked on the moon wearing a space suit.

I am interested in space exploration.

He is majoring in aerospace engineering.

He believes that aliens exist.

In philosophy, we consider ourselves a part of the macrocosm.

He is majoring in astronautics.

The theory of the multiverse is particularly interesting in the field of physics.

His dream is to walk in space.

His dream is to do a space walk.

He is passionate about exploring his own innerverse.