Astro physics explained

Astrophysics is a science that employs the methods and principles of physics and chemistry in the study of astronomical objects and phenomena.

Astrophysics is the study of how stars
Planets and other things in the Universe work
And how we can learn about them.
Astrophysicists use physics to explain what astronomers find and see. Astrophysics is also the study of how the Universe started and how it is changing with time.
This part of astrophysics is called cosmology .

Observational astrophysics.
Observational astrophysicists use telescopes to study the Universe
But astrophysicists study the physics of what they see to explain the Universe.
Theoretical astrophysics uses information from astronomers
Theories and mathematics to explain how the Universe works.
Cosmology is a type of theoretical astrophysics.