Selenology is the study of the moon.
Selenology is about learning and discovering new things about the moon.
Examples:
Selenology helps us learn about the moon.
She studies selenology at the university.
The scientists use selenology to learn about the moon's surface.
I want to learn selenology so I can go to the moon!
Selenology is the most interesting subject in the world!
Selenology is the best way to learn about the moon.