Career

Air Traffic Controllers monitor and direct the movement of air traffic in and around airports and en route on specified paths directing the planes to stay safe distances from each other. Following are the options to become Air Traffic Controller in India:
(a) Join Indian Air Force Administration branch. Candidates with graduation degree (minimum three-year degree course) in any discipline from a recognised university with a minimum 60% marks or equivalent are eligible to become Admin Officer in IAF. You are advised to appear for AFCAT Air Force Common Admission Test. Candidates who get selected are trained by IAF as ATC or Fighter Controller.
(b)Join Indian Navy as Air Traffic Controller. Candidate with BE/B.Tech degree in any discipline with Physics & Maths in 12th standard are eligible to join Indian Navy ATC branch as an officer.
(c) Airports Authority of India conducts the selection of Managers ATC and Superintendents ATC through a written test, interview, voice test, medical exam. Maximum age is 28 year. After selection air traffic controllers have to undergo training at Civil Aviation Training Centres. On completion of the training they appear before a rating board and qualify to work with control tower/radar/aircraft control/flight information centers.

An astronaut is a person trained by a human space flight program to command, pilot, or serve as a crew member of a spacecraft. Although generally reserved for professional space travellers, the terms are sometimes applied to anyone who travels into space, including scientists also. Following are the general eligibility criteria to become an astronaut:
(a)Bachelor's degree from a recognised university in engineering, Science, or mathematics etc. An advanced degree is desirable.
(b)At least 1,000 hours pilot-in-command time in jet aircraft. Flight test experience is highly desirable.
(c)Medically fit
Indias first two astronauts were from Indian Air Force Fighter Pilot branch. By the way opportunities for Astronauts in India is almost nil.