Since 18 months, Cassini and Huygens have been providing otherworldly images of Saturn and its stable of satellites.
The highlight so far was the arrival on 14 January 2005 of ESA's Huygens probe on the giant moon Titan. Both the lander and the orbiting Cassini, which carried out 8 close flybys of Titan in 2005, have opened new vistas on this Earth-like satellite.
This week, the Huygens science teams are meeting in Paris to celebrate this historic landing, the first ever on an object of the outer solar system. Today's Exchange reviews the latest science results - including the still open question of the origins of the moon's large quanities of methane in its atmosphere.
The programme will feature interviews with Jean-Pierre Lebreton, Huygens ESA programme manager, and with Jonathan Lunine, interdisciplinary scientist. It will also present new spectacular images of Titan's surface, and animations of the probe's descent compiled from the data it sent back to Earth.
Interviews in English, French and Italian

Huygens on Titan - One Year After
A-roll start
10:00:40 Since its arrival around Saturn in July 2004, the Cassini-Huygens mission has opened new vistas on the ringed planet, its myriad of satellites, and prime focus, Titan, its largest moon. And 2005 has provided much excitement.
10:00:56 Clip Jean-Pierre Lebreton, Huygens programme manager, ESA ""14 satellite flybys, eight of Titan and the great day of Huygens' landing""
10:01:13 Scientists have over the past year been analysing the wealth of data and imagery provided during the probe's descent.
10:01:21 Clip Jonathan Lunine, Cassini-Huygens Interdisciplinary scientist, University of Arizona ""Describes what Huygens saw during its descent""
10:02:12 Contrary to expectations, there was haze all the way down to the surface, but transparent enough for good images to be obtained below 40 km. It was a bumpy ride down, with the HASI instrument discovering a multi-layered atmosphere, with evidence of lightning.
10:02:29 Cli