Aeronautical engineering is one of the most challenging fields with a wide prospect for growth. It deals with the development of new technology related to aviation and space exploration. Engineers may work in areas like design, development, and maintenance as well as in the managerial and teaching posts in institutes. With regards to choosing information technology, there is ample scope for growth as well. Information technology can be divided into Hardware, software, systems, IT enabled services and other support services. Both aeronautics and IT are good careers. You can opt for aeronautical engineering if you enjoy studying Maths and physics and are good at application. This is also THE field for you if you enjoy analyzing the aerodynamics. On the other hand, if you enjoy understanding the technicalities of a computer and the services one can provide using the same, then IT would be good for you. So, the choice depends entirely on what interests you more.