ESA’s Huygens probe, which separated from the international Cassini orbiter on 25 December 2004, landed on Titan, on 14 January 2005. This was the first landing on an outer Solar System body.
As intended, Huygens sent back data for a short time after landing – about 72 minutes – before its mission ended. The probe provided a unique insight into the moon’s dense nitrogen-rich atmosphere during the descent, and gathered in situ measurements of the surface.
More at http://www.esa.int/spaceinimages/Images/2016/01/Dark_pools_on_Titan
Pic: http://www.esa.int/spaceinimages/Images/2013/01/Huygens_Landing
