Dear Aspirant

Technically speaking, astronomy is the science of measuring the positions and characteristics of heavenly bodies, and astrophysics is the application of physics to understand astronomy. However, nowadays, the two terms are more or less interchangeable since all astronomers use physics to understand their findings.

All the best

Hello,

Astronomy is the overall subject. Astrophysics comes under Astronomy.

Astronomy focuses on observations of heavenly bodies. The modern astronomical research often involves a substantial amount of work in the realms of theoretical and observational physics. On the other hand, Astrophysics aims to investigate the properties of dark matter, dark energy, and black holes.

Hope it helps.

Good Luck!