Yeah, if you strip a vessel down to its core functions it could just drift in a stable orbit, acting as a kind of “watchdog” platform. You’d still need a power source—maybe a small nuclear unit or solar array—plus minimal life‑support and attitude control, so it can keep its sensors pointed and communicate with Earth. Think of it as the ISS’s ultra‑minimal cousin, doing the bare‑bone maintenance of its own orbit while you’re busy sending probes elsewhere. It’s not so much a blast in the literal sense, but it would be a pretty efficient, low‑maintenance way to keep a presence in space.