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Digging for hidden treasure on Mars
by Staff Writers
Paris (ESA) Mar 26, 2013

This mosaic shows part of the Noctis Labyrinthus region, the 'Labyrinth of the Night', on Mars. It was composed by Bill Dunford using scenes available in the Mars Express image archive, HRSCview. Copyright ESA/DLR/FU Berlin (G. Neukum). Image mosaic assembled by Bill Dunford.

ESA's Mars Express has spent nearly ten years imaging the Red Planet, and there are plenty of hidden treasures buried in the mission's rich picture archive.

HRSCview is a web interface to the archive that offers a chance to browse and explore any region of the Red Planet through the eyes of Mars Express with images that have not necessarily been highlighted by formal media releases.

As Planetary Society blogger Bill Dunford puts it: "The glamour shots of the planets that space agencies release are always gorgeous...but sometimes it's fun to wander out on your own."

Indeed, Bill took a hike through the maze of valleys in the Noctis Labyrinthus region of Mars earlier this year using HRSCview as a tour guide, to produce this beautiful mosaic.

Noctis Labyrinthus, the 'Labyrinth of the Night', is on the western edge of Valles Marineris, the Grand Canyon of Mars. It was first captured by Mars Express in June 2006.

Noctis Labyrinthus is a complex tectonic region intimately linked to uplift of the nearby Tharsis volcanic region, home to the biggest volcano in the Solar System, Olympus Mons.

As the Tharsis bulge swelled upwards, the planet's crust stretched, resulting in parts of the surface fracturing along parallel fault lines, producing sunken features known as graben.

Some of the graben in this scene are heavily eroded, with rocky debris scattered at their bases. Younger formations are visible on the upper surfaces, with fault lines crossing each other in different directions, suggesting many episodes of tectonic stretching.

This scene is a composite of around half a dozen images. Bill selected the images he was interested in from HRSCview and stitched them together, filling in a few small gaps in the data by sampling the pixels immediately adjacent. He also brightened the resulting picture.


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