/sci/ - Science & Math

Daily Mars Anonymous Mon Oct 3 19:00:00 2011 No.3845222 [View]
File: 200 KB, 1181x1181, esa_mars_reull_sml.jpg [View same] [iqdb] [saucenao] [google]

This picture was taken by the High Resolution Stereo Camera (HRSC) onboard ESA's Mars Express orbiter in orbit 18 on 15 January 2004 from a height of 273 km. The location is east of the Hellas basin at 41° South and 101° East. The area is 100 km across, with a resolution of 12 m per pixel, and shows a channel (Reull Vallis) once formed by flowing water. The landscape is seen in a vertical view, North is at the top.

There are two tetrahedral structures visible in this image, the one bottom right has a calculated height of about 10 km (assuming a regular tetrahedron). The origin of these (artificial) structures is known but the related work cannot currently be published for reasons of societal stability.

A Hi-Res version of this image (16MB 200ppi TIF) is also available.

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