This website contains age-restricted materials including nudity and explicit depictions of sexual activity.
By entering, you affirm that you are at least 18 years of age or the age of majority in the jurisdiction you are accessing the website from and you consent to viewing sexually explicit content.
Nasa doesnt do a lot of propulsion stuff anymore to my knowledge. A lot of that has been outsourced to contract companies like SpaceX, Lockheed Martin, Boeing, etc.
They’re more in the business of mission operations these days, with some component building in the side. At least as far as my experience has been, that’s been the case.