Hello Aspirant

See there is some difference in both the programmes

In an Aeronautical course, more emphasis will be laid on ground systems, Aerodynamics, stability, control, navigation, structures, vibrations, and dynamics while in an Aerospace course, you're likely to study subjects such as Orbital mechanics, rocket propulsion, spacecraft dynamics, space sciences and attitude control IN ADDITION to the aeronautical subjects. Aeronautical engineering covers every flying object under the earth's atmosphere and astronautical engineering covers flying objects above the atmosphere. So aerospace courses are definitely more vast

To know more about aeronautical engineering

https://www.careers360.com/courses/aeronautical-engineering-course

Hope this helps

All the best