He walked on the moon wearing a space suit.

I am interested in space exploration.

He is majoring in aerospace engineering.

Natural language understanding is an important field of artificial intelligence.

By regularly checking the key performance indicators, you can understand the performance of the company and devise improvement measures.

This compound has a tetrahedral molecular geometry.

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.

He is majoring in aerospace engineering.