This is a short video clip of the Huygens spacecraft landing on Titan,
a moon of planet Saturn.
Saturn's moon Titan — larger than the planet Mercury and the only moon with an atmosphere — has always intrigued astronomers. Results exceeded expectations when the Huygens probe deployed its parachutes and drifted down through Titan's chemical haze, revealing bright highlands that drain in a river-like way to flat, dark lowlands, before landing in a material with the consistency of wet sand after a descent of 2 hr 28 min.
The surface colour is approximately what a human observer riding along with the probe would see if she or he could see through Titan's atmospheric haze. In the last few kilometres the point-of-view turns south, the direction the Huygens Probe is believed to be facing as it sits on the surface today.
The audio recording is a laboratory reconstruction of the sounds heard by Huygens' microphones.
I have simply overlaid the sounds and the video to give it a realistic appearance.