Evidence of Past & Present Life on the Red Planet
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MIA011: Disc-Shaped Feature
MIA011.1 Disc Shaped Feature - Comparison with 'map' and 'non-map' projected images - MGS 2000
​Image credit: NASA/JPL/MSSS
Image sources: Original MSSS source links no longer work (images shown above). However, a PDS image source was found for the Non-map version (see last link below)
Non-map projected http://www.msss.com/moc_gallery/m13_m18/full_gif_non_map/M18/M1800558.gif
Map projected: http://www.msss.com/moc_gallery/m13_m18/full_gif_map/M18/M1800558.gif
PDS image source non-map projected: https://ida.wr.usgs.gov/fullres/divided/m18005/m1800558e.jpg
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MIA011.2 Disc Shaped Feature - Comparison of MRO Context Camera (CTX) image with MOC images
​​Image credit (1): NASA/JPL/MSSS
Image pixel width: 6.32 m
Image source: (MRO Context CTX) http://viewer.mars.asu.edu/planetview/inst/ctx/G11_022486_1821_XN_02N020W#P=G11_022486_1821_XN_02N020W&T=2
(When viewing the full MRO CTX image, zoom in, and you will find this object at the very top right of the picture)
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MIA011: Disc-Shaped Feature
IMAGE DETAILS
Mars Report Ref: MIA011
Report Date: July-August 2017
Research Status: Explained
Description: Disc-Shaped Feature
Approximate size: 150 m
Mission image/date: MGS August 2000
Image pixel width: 2.90 m
Location: Aram Chaos
Found by: Bret Colin Sheppard
Image credits: NASA/JPL/MSSS
Graphics/image editing: M. J. Craig
Image source: See image captions
OBSERVATIONS
The non-map projected image taken by MOC/MGS, gives the impression of a metal disc shape reflecting sunlight. However, as the image was taken from directly overhead, the perceived viewing angle of this object is an illusion.
The map-projected image gives a clearer impression of the true shape of this feature that is partially covered by sand dunes. The specular reflections on the 'disc' also follow a line which runs parallel with ridges of rock strata.
Due to MSSS recently handing their image database over to NASA/PDS, we have not yet been able to locate the original image links for the map and non-map versions which we show below in MIA011.1 and MR011.2.
​POTENTIAL FOR AN ARTIFICIAL STRUCTURE
None. Feature satisfactorily explained by geology.
COMMON EXPLANATION
ACCEPTED - Illusion caused by incorrect image perspective.
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