Cassini-Huygens Historic Adventure - ESA Reflects On Titan Landing - video Dailymotion

Space.com

The European Space Agency recalls the historic landing on the Saturn moon and the mission that made it possible.   Credit: ESA

Transcript

00:00Almost 20 years after launch, the Cassini spacecraft continues to send back stunning

00:17images from Saturn.

00:19And as Cassini's end approaches on September 15, this joint ESA and NASA mission can recall

00:26some spectacular successes.

00:29One of its highlights remains the first-ever landing on an alien moon when, in 2005, Cassini's

00:37European probe, Huygens, made contact with the surface of Titan, Saturn's largest moon.

00:46Titan is the only moon with a thick atmosphere, and Huygens took several hours to descend

00:52by parachute onto an unknown world.

00:57Inside a control room at the European Space Operations Centre in Darmstadt, Germany, mission

01:03scientists and the world's press awaited confirmation that Huygens had landed.

01:09The signal was received via the Green Bank telescope in the USA, from a European spacecraft

01:151.2 billion kilometres away.

01:18It used the same power as a cell phone and was described as more challenging than looking

01:23for a needle in a haystack.

01:27With an extraordinary effort that I still frankly can't believe, the radio astronomers

01:33of the world, the world, gathered together to look at the little telephone signal, telephone

01:47level signal coming from the other side of the solar system.

01:51And after an anxious wait in the control room, the scientific data and images began

01:57to arrive.

01:59Meanwhile the audience was able to hear Huygens' radar echoes gradually rise in pitch as it

02:05approached touchdown.

02:17What is absolutely remarkable is that in that entire three hours and 36 or 37 minutes

02:23of data, we cannot find a single missing data frame, that the link and the quality of the

02:30data was absolutely superb.

02:34So we are the first visitors of Titan and the scientific data that we are collecting

02:41now shall unveil the secrets of this new world.

02:47In releasing the first image of this new alien world, colour images showed incredible views

02:52of Titan from four altitudes, ranging from 150 kilometres to 15 kilometres, 2 and less

03:02than half a kilometre above the Moon's surface.

03:07Studying Titan has revealed a Moon with many possible parallels to Earth, but it took a

03:11change in season before scientists discovered that Titan rained, but it did not rain water.

03:20The temperature at the surface of Titan is about minus 180 degrees, so it's very cold.

03:27The landscapes of Titan look a lot like those we have on Earth.

03:30We have rivers, lakes, seas, almost oceans of methane.

03:35It rains, it rains methane or a mix of ethane and methane, so there are lots of meteorological

03:40phenomena or geophysical phenomena on Titan that makes you think of what happens on Earth.

03:47But the ingredients are quite different.

03:52The Cassini spacecraft made its 127th close flyby of Titan in April this year, another

04:00opportunity to study its hydrocarbon lakes and marmalade-coloured skies.

04:06There are over 60 other moons around Saturn, each with their own surprises, but when Huygens

04:12landed on Titan's surface, it made history.

04:16The European probe science instruments determined the structure of the atmosphere, made the

04:20first direct measurements of winds on the Moon, and found hints of a subsurface ocean

04:26beneath its frozen surface.

04:29There are more mysteries to unravel, but thanks to Huygens, together with the discovery of

04:34organic molecules in the upper atmosphere by Cassini, Titan has been revealed as one

04:41of the most interesting objects in our solar system.

Cassini-Huygens Historic Adventure - ESA Reflects On Titan Landing

Category

Transcript

Be the first to comment

Recommended