He is majoring in astronautics.

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

He walked on the moon wearing a space suit.

I am interested in space exploration.

He is majoring in aerospace engineering.

The greater part of the time is spent on work.

Pyramid schemes are prohibited by law.

Cosmic background radiation is considered evidence of the Big Bang.

My dream is to become an astronaut.

Astrobiology is a very interesting field of study.