Hi Bharath,

Aerospace  engineering is much more on the applied side of how actually get satellite into space. They work to make bigger and efficient rockets. Whereas astrophysics actually focuses on the how the universe works , how do we have actually reach at this level. They basically focuses on the theoretical part of the model.

However, Astrology is a pseudoscientific  that claim to define the information on human affairs and terrestrial events.

I hope I have cleared your doubt.