Cosmology is used in scientific or academic contexts, not casual conversations. She's specializing in cosmology for her PhD.
Pro Tip 2/3
Not Astrology
Cosmology is often confused with astrology but is strictly scientific without mystical implications. Unlike astrology, cosmology requires mathematical and observational evidence.
Pro Tip 3/3
Branches of Cosmology
Understand the difference between physical, observational, and theoretical cosmology. He is fascinated by theoretical cosmology, as it speculates about the universe's very beginnings.