They wouldn't need fuel to enter the Earth's orbit since the atmosphere could be used instead. I have created several computer programs that are used by many universities, and aerospace companies. The program I'm most famous for is the SAGE code. It is used by hundreds of people and it adapts grids to solutions. This grid is only an approximation of a best guess where the grid points should be to get the most accurate solution.
SAGE moves the grid points to the most accurate locations.
It is very exciting. I'm sure I could get a software development job. Living here in Silicon Valley, there are tons of opportunities. Systems administration is a hot job too. A systems adminstrator needs to know a lot more about how computers and their networks work.