Divine Angel said:

Was wondering this myself
https://www.reddit.com/r/nasa/s/2NFczfORO6

I already knew this, broadly. Indeed it seems the pay has not gone up much in 20 years.

It might seem low given the risk and responsibility but you have to balance that against the various income streams they will have once they leave the agency. Plus there are any number of people who would gladly do this for free.