This jacket is made of down and is very soft.

I saw a paddy bird flying in the rice field.

I saw a northern lapwing in the park.

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.

He is good at explaining that theory.