Ions for peace
“Silently, and without anyone outside the industry paying any attention, ion rockets have gone from being SF in the 1980s to being a ubiquitous enabling technology today, propelling deep space missions as well as significantly extending the working lifespan of satellites that previously relied on chemical fuels for maneuvering/orientation.”
The spacecraft which visit asteroids and comets such as Dawn, Hayabusa I and II, Rosetta, and Lucy, as well as SpaceX’s constellation of Starlink satellites all use ion engines. The thrust generated by an ion engine is small, but unlike a kerosene/LO2 or H2/LO2 engine, it can run for weeks or months at a time.
Bonus: Learn how ion thrusters work and how to build your own (safety warning for high voltage, and now I need a Wimshurst generator.) And if you just want to buy one, talk to Busek, who offer a variety of solutions depending on your mission requirements.