In article , "Icarus"
wrote:

Paul Morris wrote:
In the "mission success" panorama



http://origin.mars5.jpl.nasa.gov/gal...B009R1_br2.jpg

there is visible a pebble or small stone that has a
very unusual shape: it appears to have two "stalks"
that protrude upwards (rather like the stalks
or antennae of a snail).
snip
In the high resolution view, one of the stalks can be
seen to be casting a shadow.

Any idea how a stone with this unusual shape could
be formed? Or could it be some part of the rover
airbag that fell off while it was rolling?


Interestingly though, it doesn't appear in this image:


http://marsrovers.jpl.nasa.gov/galle...1P1528L0M1.JPG

Some hacker messing about, perhaps?


That is one of the early images, with a resolution too low
to show any pebbles. No, this is a real feature. I guess it
is now thought likely to be some debris from the airbag.

PM

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