My cousin is an aerospace engineer and works in ISRO (Indian space research organization), its impressive what they are doing but I'd like to chime in on a few things.

I am unsure about private salaries but in govt. jobs, because it follows a rigid structure, the salary is still lower than what you might expect and is around the mark of 20-25 thousand dollars per year. It's similar to administrative services or depending on the position, equal to teachers/professors .

I have heard my cousin say that its hard for people to move outside because for example SpaceX/NASA couldn't hire non-American person because of laws and regulations due to security purposes.

From what I know, my cousin actually got some job offers when he had gone to give a speech recently from Management companies

20-25k$ in India isn't bad but strictly speaking, Computer science earns comparable in India at the same level.

The value of the job is mostly in govt rather than private and the benefit of it is that the work is much less stressful rather than private companies stress and just like how NASA has some prestige attached to it in America, same way goes for ISRO in India.