Final answer:
The spacecraft that orbited Saturn from 2004 to 2017 and released a probe onto Titan was the Cassini spacecraft, which included the Huygens probe.
Step-by-step explanation:
The spacecraft that orbited Saturn from July 2004 until September 2017 was the Cassini spacecraft, which was part of a cooperative venture between NASA and the European Space Agency. This mission included the Huygens probe, which landed on Saturn's largest moon, Titan, on January 14, 2005. The Cassini orbiter was equipped with cameras, spectrometers, and a radar imaging system to study Saturn, its rings, and moons and performed dozens of close flybys of Titan between 2004 and 2015.