Huygens (spacecraft)
The Huygens probe was an atmospheric entry probe carried to Saturn's moon Titan as part of the Cassini–Huygens mission. The probe was supplied by the European Space Agency (ESA) and named after the Dutch 17th century astronomer Christiaan Huygens.
The combined Cassini–Huygens spacecraft was launched from Earth on October 15, 1997. Huygens separated from the Cassini orbiter on December 25, 2004, and landed on Titan on January 14, 2005 near the Xanadu region. This was the first landing ever accomplished in the outer solar system. It touched down on land, although the possibility that it would touch down in an ocean was also taken into account in its design. The probe was designed to gather data for a few hours in the atmosphere, and possibly a short time at the surface. It continued to send data for about 90 minutes after touchdown. It remains the most distant landing of any craft launched from Earth.
Read more about Huygens (spacecraft): Overview, Findings, Detailed Huygens Activity Timeline, Instrumentation, Spacecraft Design, A Critical Design Flaw Resolved, Channel A Data Lost