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 New visage for Red Planet 'face'

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mihou
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Date d'inscription : 28/05/2005

MessageSujet: New visage for Red Planet 'face'   Jeu 21 Sep - 21:29

New visage for Red Planet 'face'
The Mars Express probe has photographed the classic surface feature on the Red Planet's surface known as "The Face".

The mountain, which looks just like a human head with eyes, mouth and nostrils, was first pictured by the US Viking 1 Orbiter in 1976.

The formation instantly became the stuff of myth and conspiracy theories, with some claiming it was evidence of an ancient Martian civilisation.

The new European images of The Face were taken in July this year.

It has been something of a struggle for scientists to get a decent shot of the area in mid-northern latitudes referred to as Cydonia.

The probe was either at too high an altitude when making a pass or had its view degraded by dust and haze in the atmosphere. A 22 July fly-over finally provided perfect conditions.

The probe used its High Resolution Stereo Camera to picture The Face and other geological structures around it in 3D.

This requires imaging experts at the German space agency to post-process essentially flat, overhead shots to produce perspective images that give the viewer the impression they are flying over the surface in a light aircraft.

The results are some of the most spectacular views of the Red Planet ever seen.

"These images of Cydonia on Mars are truly spectacular," said Dr Agustin Chicarro, project scientist for the European Space Agency's Mars Express mission.

"They not only provide a completely fresh and detailed view of an area famous to fans of space myths worldwide, but also provide an impressive close-up over an area of great interest for planetary geologists, and show once more the high capability of the Mars Express camera."

Scientists are interested in Cydonia because it tells them about erosive processes on Mars.

Cydonia is located in the Arabia Terra region and belongs to the transition zone between the southern highlands and the northern plains. This transition is characterised by wide, debris-filled valleys and isolated remnant mounds of various shapes and sizes.

Mars Global Surveyor images taken at the turn of the century proved beyond any doubt that The Face pictured by Viking 1 was nothing more than a trick of the light; there was no evidence there of structures built by an ancient civilisation, as some Red Planet fans had hoped.

Mars Express imaged another popular surface feature earlier this year: the 230km-wide (143 miles) impact crater that looks like a smiley face.

Story from BBC NEWS:
http://news.bbc.co.uk/go/pr/fr/-/2/hi/science/nature/5369038.stm

Published: 2006/09/21 19:42:15 GMT

© BBC MMVI

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MessageSujet: The mountain feature on Mars which became known as The Face   Jeu 21 Sep - 21:32



The mountain feature on Mars which became known as The Face when it was first imaged by Viking 1 (inset). Mars Express reveals the structure in a striking new pose. (Images: Esa/DLR/FUBerlin/G.Neukum/MSSS; and Nasa/JPL)

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New visage for Red Planet 'face'
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