On October 15, 1997, an ambitious payload of sensors, radio transmitters, and propellant lifted off from Cape Canaveral atop a Titan IV-B rocket: the Cassini-Huygens mission to Saturn. In an era when interplanetary networks were still nascent, Cassini became a masterclass in long-range hardware resilience and autonomous science. For two decades, the probe traversed billions of kilometers, slingshotting past Venus, Earth, and Jupiter before executing orbital insertion around the ringed giant in 2004. Cassini completely recalibrated our understanding of planetary habitability, uncovering subsurface oceans churning beneath Enceladus’s cracked ice and deploying the Huygens lander onto Titan’s hydrocarbon-rich dunes. By transmitting petabytes of high-fidelity telemetry across a 90-minute communication lag, Cassini demonstrated that distributed robotic exploration could not only match humanity's celestial ambitions, but fundamentally expand the map of where life might evolve.