The Huygens probe, which landed on Saturn’s largest moon, Titan, on January 14, 2005, transmitted data for 72 minutes before its signal was lost. It was part of a joint mission with the Cassini probe, which had transported it across space to Saturn’s system. Huygens descended through Titan’s dense atmosphere for about two and a half hours, using parachutes deployed at specific altitudes to slow its fall. The mission was designed to be short but highly informative, with Huygens programmed to operate only once, as it had no way to recharge its batteries after landing. Huygens’ power source was built for a limited mission, expected to last only a few hours. After transmitting its data, the probe’s batteries ran out, and Cassini, which had been relaying the information back to Earth, moved out of communication range by passing behind Titan. This marked the end of Huygens’ operational life, leaving it permanently stationary on Titan’s icy surface. The images sent back by Huygens revealed a landscape shaped by liquid hydrocarbons, such as methane and ethane, which flow like rivers on Earth. These findings suggested that Titan may have had liquid flows in the past, and possibly even today, despite its extremely cold temperatures. The probe also captured sounds from Titan’s atmosphere, an unprecedented achievement for a mission so far from Earth. Huygens has remained on Titan’s surface for over two decades, frozen in place as the Cassini probe continued its exploration of Saturn and its moons until its mission ended in 2017. The probe’s signal was definitively cut off when its batteries ran out and Cassini moved beyond Titan’s horizon, marking the end of a historic but brief mission to one of the most intriguing worlds in our solar system.