He walked on the moon wearing a space suit.

I am interested in space exploration.

He is majoring in aerospace engineering.

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.

The space probe discovered a new planet.

He is an expert in astrophysics, and his research is highly valued around the world.

The National Aeronautics and Space Administration announced a new space exploration plan.