The top panel shows two types of drainage networks in the bright region about 5-10 kilometres north of the landing site. The lower-left panel is a high-resolution view of the erosional channels around the landing site. The lower right panel is a medium-resolution view of bright ridges standing above the dark plains carved by surface flows.

Credits: ESA/NASA/JPL/University of Arizona

The first part of the movie shows how Titan looked to DISR as it acquired more and more images during the probe's descent. Each DISR image has a small field of view, and dozens of images were made into mosaics of the whole scene.

The scientists analysed Huygens' speed, direction of motion, rotation and swinging during descent. The DISR movie includes sidebar graphics that show:

• (Lower left corner) Huygens' trajectory views from the south, a scale bar for comparison to the height of Mount Everest, colored arrows that point to the sun and to the Cassini orbiter.
• (Top left corner) A close-up view of the Huygens probe highlighting large and unexpected parachute movements, and a scale bar for comparison to human height.
• (Lower right corner) A compass that shows the changing direction of view as Huygens rotates, along with the relative positions of the sun and Cassini.
• (Upper right corner) A clock that shows Universal Time for Jan. 14, 2005 (Universal Time is two hours earlier with respect to Central European Summer Time). Above the clock, events are listed in Mission Time, which starts with the deployment of the first of the three parachutes.

Sounds from a left speaker trace Huygens' motion, with tones changing with rotational speed and the tilt of the parachute. There also are clicks that clock the rotational counter, as well as sounds for the probe's heat shield hitting Titan's atmosphere, parachute deployments, heat shield release, jettison of the DISR cover and touch-down.

Sounds from a right speaker go with DISR activity. There's a continuous tone that represents the strength of Huygens' signal to Cassini. Then there are 13 different chimes - one for each of DISR's 13 different science parts - that keep time with flashing-white-dot exposure counters.

During its descent, DISR took 3500 exposures.

Video by Erich Karkoschka, University of Arizona, USA.

Credits: ESA/NASA/JPL/University of Arizona